Personal Trainer Tips: How Many Hours Per Week Should I Exercise?

How Many Hours Per Week Should You Actually Be Training?

It’s one of the most common questions I hear, and honestly, one of the most misunderstood. People come to me having either done far too much and burned out, or far too little and wondered why nothing’s changing. The answer isn’t a magic number.

Let me give you the honest PT perspective, one that works long term.

The Short Answer (And Why It’s Incomplete)

For most people, training three to five hours per week is enough to see real, meaningful progress. This could mean building strength, losing body fat, improving fitness, or just feeling better in your body day to day.

The answer is nuanced because how those hours are structured, how hard you’re working within them, what you’re doing the rest of the time, and how well you’re recovering are very important fundamentals.

A badly designed five hours will do less for you than a well-designed two hours.

That’s what most people, and many training programmes miss entirely.

Why More Isn’t Always Better

There’s a pervasive idea in fitness culture that more effort equals more results. It’s understandable as we’re conditioned to think that way. Work harder, do more, push through but the body doesn’t work like that.

Your muscles don’t grow during a workout. They grow afterwards, during rest and recovery, when the body repairs the microscopic damage caused by training and comes back a little stronger than before. If you skip the recovery, then you will also skip the results.

Overtraining is a quite common and the symptoms include persistent fatigue, declining performance, disrupted sleep, low mood, and an increased susceptibility to injury and illness.

I’ve worked with my personal training clients who were training six or seven days a week and getting worse, not better, because their body never had the chance to adapt, so I would have to intervene to tell them to slow down.

It's quite comforting, especially to the beginner to keep in mind that more hours in the gym does not equal more progress. The right hours, done consistently, is best.

What Does the Research Suggest

Exercise guidelines from bodies like the World Health Organisation and the NHS recommend a minimum of 150 minutes of moderate-intensity activity per week, or 75 minutes of vigorous activity, alongside muscle-strengthening activities on two or more days per week.

It’s a very achievable goal.

Two good strength sessions and a few brisk walks or cardio sessions per week gets you there.

For those with more specific goals such as building significant muscle mass, preparing for an event, improving athletic performance, the volume will be higher. But even then, structured rest remains non-negotiable.

These Variables Matter More Than Hours

Intensity

A 30-minute session where you’re consistently challenged beats a 90-minute wander around the gym. Are you working at a level that creates genuine stimulus? Are your last few reps actually difficult?

Consistency

Three hours a week, every week, for twelve months will transform your body. Five hours a week for three weeks, followed by two months off, won’t. Consistency is the single biggest driver of results, and the training schedule that fits your actual life is the one that will be consistent.

Sleep and Recovery

This is where the real work happens. Seven to nine hours of quality sleep supports hormonal balance, muscle repair, appetite regulation, and mental resilience. Poor sleep undermines almost every training adaptation you’re working for.

Nutrition

You cannot out-train a diet that doesn’t support your goals. If you’re building muscle, you need adequate protein and enough calories. If you’re losing fat, you need a sustainable deficit. Training without nutritional alignment is like trying to build a house without the right materials.

Stress load

Exercise is a physical stress, and your body doesn’t distinguish between the stress of a hard session and the stress of a difficult week at work or a disrupted sleep schedule. Your total stress load affects your recovery capacity. This is why a training plan that works brilliantly during a quiet period in your life might feel impossible during a difficult one.

A Practical Framework by Goal

Complete beginner: Start with two sessions per week. Build the habit, learn the movements, let your body adapt. This matters far more than volume in the early stages.

General health and wellbeing: Three sessions per week -two strength-focused, one cardio or mobility. Add incidental movement: walk more, take the stairs, stay active outside the gym.

Body composition change (fat loss or muscle gain): Three to four sessions per week, with clear structure. Progressive overload in your strength work, adequate protein, and attention to sleep. This is where working with a PT makes a significant difference, because the details matter.

Performance or athletic goals: Four to five sessions, carefully periodised with built-in deload weeks. Higher volume requires higher attention to recovery. I often tell my clients to take a week off every few months.

Busy professional or time-limited: Don’t abandon training but try to compress it. Two well-designed 45-minute sessions a week will produce results.

A Note on Rest Days

Rest days are not wasted days. They are productive days. They help physiologically. They are the most productive days, because that’s when adaptation happens.

I always encourage clients to reframe rest as part of the training, not an absence of it.

Active recovery on rest days is perfectly fine: a gentle walk, light stretching, swimming, a yoga class. The point is to move without creating additional demand on your recovery system.

Ultimately, The Best Training Schedule Is The One You’ll Stick To

The training program that fits your life, respects your recovery, challenges you consistently, and that you can still be doing twelve months from now, is the best schedule.

For most of the people I work with, that’s three to four sessions per week, forty-five minutes to an hour each, built around their goals and their lifestyle.

If you’re not sure where to start, or you’ve been training for a while and feel like you’re not really getting anywhere, that’s exactly the kind of thing I help with. Let's work together, to help you find the version of training that fits your life.

I'm Marios and I am a personal trainer based in Arnos Grove, North London, with over 16 years of experience working with clients 1-2-1 and online.

To find out more or enquire about working together, drop me a message!