The problem: you love the sport, but the rest of your training is a guess
You have started boxing classes, joined a kickboxing gym or taken up MMA. The sessions are hard, you are hooked, and now the questions start. Should you lift weights as well? Will lifting make you slow? Do you need to run, and how far? Should you copy the fight camp videos where a professional trains three times a day? And how do you fit any of it around classes that already leave you tired?
Most people answer by adding things: a HIIT circuit here, a long run there, a heavy leg day before sparring. The week fills up, every session feels hard, and the sport itself gets worse. This article answers one question: how should training outside the sport be organised so that it actually supports boxing, kickboxing or MMA?
Where this extra sits in the APEX series
This is an APEX extra, written outside the course's numbered order. It belongs to editorial Phase 6 of the series, Understand Program Types, the part of the course that explains the program structures people meet in the real world. It builds directly on article 22 (Training for Athletic Performance) from editorial Phase 3, and on articles 57 (Conditioning Programming) and 58 (Concurrent / Hybrid Programming) from editorial Phase 6. Editorial phases are simply how this series is published and organised. They are not training seasons (Ground, Advance, Maximize, Excel, Peak, Prime) and they are not training phases (Learn, Overload, Amplify, Deload, Reassess), which belong to your own training journey.
The simple answer
In combat sports, the sport is the most specific training you will ever do. Technique, pad work, bag rounds, drilling and (when appropriate) sparring are the core. Everything else is a supporting program whose job is to build the qualities the sport taxes:
- an aerobic base, so you recover between exchanges and between rounds;
- the ability to repeat hard bursts without falling apart;
- strength across the main movement families, especially legs, hips, upper back and pulling;
- power that travels from the ground through the hips and trunk;
- durable tissues: trunk bracing, grip, shoulders and the neck.
That supporting program is built around your skill sessions, not on top of them. It is usually small: two strength sessions a week for most people, a little easy aerobic work, and conditioning that respects how much hard work the sport already gives you.
What these sports actually demand
Boxing, kickboxing and MMA share a pattern: work is done in rounds, and inside each round there are short bursts of very hard effort separated by lower-intensity movement, footwork and resetting. Boxing rounds are commonly a few minutes with a short break; MMA rounds are usually longer and include grappling. That pattern explains most of what the supporting program needs.
Using the ten APEX movement families taught in editorial Phase 4 of this series:
- Rotation and anti-rotation (article 32): every punch and kick depends on a trunk that can rotate fast and brace hard when hit or clinched.
- Hinge and squat (articles 26 and 27): force starts at the floor. Strong hips and legs feed punches, kicks, level changes and takedowns.
- Pull (article 29): clinch work, grappling and holding position are heavy on pulling and grip. Boxers benefit too, because punching volume is push-dominant.
- Single-leg (article 34): kickboxing and MMA spend a lot of time on one leg, balancing, checking and kicking.
- Get up and get down: in MMA, getting off the floor under pressure is a skill and a capacity.
- Gait (article 33): footwork, plus running or other rhythmic work for the aerobic base.
- Carry (article 31): a simple way to build grip, trunk stiffness and upper back endurance.
Boxing leans toward rotation, footwork and repeated striking. Kickboxing adds single-leg control and hip range. MMA adds the full grappling demand: pulling, hinging, holding positions and getting up. Same principles, different emphasis.
What the evidence says, and how certain it is
APEX keeps four layers apart: research evidence, coaching principle, the APEX framework and your individual decision. Here is each, honestly.
Research evidence
- Strength training and injury. A systematic review and meta-analysis of randomised trials across sports found that exercise programs, and strength training in particular, reduced sports injuries, while stretching programs showed little or no protective effect.[1] These trials were not specific to combat sports, so treat this as general athletic evidence that applies reasonably, not as proof for fighters specifically.
- Combining strength and conditioning. A meta-analysis on concurrent training found that adding endurance work to resistance training can reduce gains in muscle, strength and especially power, and that the interference was linked to how often and how long the endurance work was, with running showing more interference than cycling.[2] For a combat athlete who already does a lot of hard conditioning in the sport, this is a reason to keep extra conditioning purposeful rather than piling it on.
- Head impacts. The international consensus on concussion in sport states that anyone with a suspected concussion should be removed from play and medically assessed, and that return to sport should follow a graded process under appropriate medical guidance.[3]
Beyond these, much of the research on boxers, kickboxers and MMA athletes is small, descriptive and done on competitive athletes. It tells us what these sports demand, but it gives limited certainty about the single best way to train for them. The honest position: the general principles of athletic training apply strongly; the exact recipes are coaching judgement.
Coaching principle
Count the sport as training. A sparring session or a hard pad session is a hard session, even though it is not in your gym logbook. Strength work should be short, focused on a few lifts, done with reps left in reserve, and placed where it does not ruin your best skill sessions.
The APEX framework
Specificity (article 36) has a dial. For a combat sport, the most specific end of that dial is the sport itself. The gym sits at the general end: it builds the raw qualities. Conditioning sits in between: round-based intervals are more specific than a long easy run, but both have a job. The program family is Sport (sport-specific preparation), supported by the Power / Athletic and Strength families, and organised with the same logic as concurrent or hybrid programming (article 58): one quality leads, the others get a sufficient dose.
Your individual decision
That depends on how many sport sessions you do, how hard they are, whether you compete, your stage and your recovery. Which is where the rest of this article goes.
The APEX principle: the sport leads, the gym supports
For most people who take up a combat sport, the lead quality is skill in the sport. That changes how everything else is judged. A strength session is good if it makes you stronger and leaves you able to train the sport well. A conditioning session is good if it improves your fitness in rounds and does not steal the freshness your technique needs.
Think of your week as a fatigue budget (article 50). Sport sessions spend most of it. The supporting program spends the rest, and it must be planned with the sport sessions already written in.
How the week fits together
- Write down your sport sessions first. Mark each one easy (technique, drilling), moderate (pads, bag work) or hard (sparring, hard rounds, competition-style work).
- Place strength work away from your hardest sport sessions. Not the day before hard sparring if you can help it. If it must share a day, do the skill session first, or separate them by several hours.
- Keep strength sessions short. Three to six exercises, mostly multi-joint, a few working sets each, stopping two or three reps short of failure (articles 42 and 49). Power work, such as medicine ball throws and jumps, goes first while fresh (article 48).
- Add conditioning only where the sport leaves a gap. If you train the sport four or five times a week, you may need little extra hard conditioning. If you train it twice, an easy aerobic session and one round-based interval session can help.
- Make hard days hard and easy days easy. Stacking moderate fatigue every day is the classic way combat athletes get stale.
Conditioning without burning yourself out
The aerobic base matters more than most fighters think. It is what helps you recover in the break between rounds and between exchanges within a round. It is built mostly with easy, repeatable work: easy runs, cycling, rowing, skipping at a conversational pace (article 20). Cycling or rowing can be a useful choice if running adds too much leg fatigue or impact on top of footwork.
Harder conditioning should resemble the sport's structure: rounds of work with short rests, such as bag rounds or interval efforts that match the round length you train or compete with. Notice that bag rounds are conditioning and skill practice. That is often a better use of hard minutes than an unrelated circuit.
What you rarely need is a daily high-intensity circuit added to an already hard week. That is the pattern the concurrent training evidence warns about: more conditioning is not automatically better, especially when it eats into strength and power.
Neck, trunk and grip: the durability work
Combat sports load the neck, trunk and hands in ways most gym programs ignore. Simple, low-risk work helps tissues tolerate the sport: anti-rotation and anti-extension trunk exercises (article 32), carries for grip and bracing, rows and pulling for the upper back, and gentle isometric neck holds where you press your head into your own hand without moving. Build these slowly, like any other capacity.
Be clear about the limit: no exercise makes head impacts safe, and no neck exercise should make anyone accept more head contact. Managing hard sparring, protective equipment, and following medical guidance after any suspected concussion matter far more.[3]
Making weight: a boundary
Many competitive fighters lose weight quickly before weigh-ins. Rapid weight cutting, especially through dehydration, carries real health risks. This article is fitness education and does not give weight-cutting guidance. If you compete in weight classes, choose a sensible weight class for your body and work with your coach, a qualified sports dietitian and medical support. For young athletes, parents should be especially cautious and involve the coach and a healthcare professional before any attempt to change weight for competition.
A real-world example (illustrative)
Picture someone in their thirties with a desk job who starts boxing classes three evenings a week. They love it, so they add a heavy leg day, a 10 kilometre run and a daily HIIT workout. By week three their legs are heavy in every class, their shoulders ache, and they are slower on the pads than when they started.
The APEX version of the same person keeps the three classes, marks Thursday's sparring-style session as hard, and adds two short full-body strength sessions on Monday and Saturday: goblet squats, Romanian deadlifts, rows, push-ups, a Pallof press and a farmer carry, plus a few medicine ball throws at the start. One easy 25 minute bike or skipping session goes on Sunday. Four weeks later they log more rounds completed at good quality, their lifts have gone up a little, and they feel fresher in the last round. Same person, same sport, a program that serves the sport.
This is an illustration of the principle, not a real case.
What people commonly get wrong
- Not counting the sport as training. Sparring and hard pads are hard sessions. Plan around them.
- Replacing skill with exhaustion. Being tired is not the same as getting better. Technique done exhausted is often technique practised badly.
- Fearing strength training. Sensible strength work, done with reps in reserve and placed well, supports a fighter. Endless grinding to failure does not.
- Copying bodybuilding volume. Long sessions per body part leave little for the sport. Combat athletes usually need fewer, well-chosen exercises.
- Doing all conditioning hard. Without an easy aerobic base, round-to-round recovery suffers.
- Training through pain. Persistent pain, or any head injury symptoms, is a reason to see a qualified healthcare professional, not to push on.
Where this fits in APEX, stage by stage
- Restoration: returning to a combat sport after injury, illness or a concussion is directed by the appropriate healthcare professional. APEX supports general capacity alongside that care; it does not replace it.
- Foundation: fitness boxing or beginner classes. The goal is consistency, learning basic movement and two simple full-body strength sessions. Nothing specialised is needed.
- Transformation: many people use boxing or kickboxing classes as the conditioning part of a fat-loss or recomposition goal. That works well, as long as resistance training and eating still lead the body change (articles 15 and 17).
- Development: regular training, maybe amateur competition ahead. Strength and power become more structured, conditioning starts to match round structure, and fatigue across the week is planned.
- Performance: competing seriously. Preparation for a bout can be organised through the APEX training phases (Learn, Overload, Amplify, Deload, Reassess), with gym work reduced and sharpened as the competition nears and the sport taking priority.
- Mastery and Legacy: sustaining the sport for years, managing contact exposure and recovery, and for many, coaching and passing the skill on.
Children and teenagers train in combat sports too. The same principles apply, with extra attention to qualified supervision, contact rules for their age and long-term enjoyment; articles 66 and 67 cover the general principles for parents and coaches.
What not to copy
Professional fight camps often show two or three sessions a day, extreme weight cuts, tyre flips, sledgehammers and exhausting circuits. Those athletes have years of tolerance built up, a team around them, a fixed fight date and recovery as their job. Some of what you see is for the camera.
The principle to extract is simpler: they build the sport first, support it with strength, power and conditioning, and reduce training as the fight gets closer. You do not need their program. You need the next appropriate step for where you are.
Your next best step
Take one normal week and write down every sport session you do, marking each easy, moderate or hard. Then place two short strength sessions in the gaps furthest from your hardest session, using the sample program below at your level. Run that same week for four weeks without adding anything else. At the end, check three things: how many rounds you complete at good quality, whether your main lifts have gone up, and how you feel in your last round. If all three are steady or better, keep going. If one is getting worse, reduce the extra work before adding more.
