To start lifting weights at 40, follow a 3-day per week full-body routine. Use five basic compound exercises. Your goal is to add a small amount of weight, like 2.5kg or 5 lbs, to your lifts each week. This method is the safest and most effective way to build foundational strength and muscle.
This approach works because it prioritizes consistency and recovery, which are more important after 40 than when you were 20. It is designed for beginners or those returning to the gym after a long break. This plan is not for advanced lifters who already have a significant strength base. The focus is on mastering fundamental movements before adding complexity. The entire system is built on the principle of progressive overload, which is the non-negotiable rule for getting stronger. Here's why this works.
The biggest mistake men make at 40 is copying the 5-day body-part splits of 20-year-olds. These routines, like a dedicated chest day or arm day, hammer a muscle group once a week. This approach requires more recovery time than most 40-year-olds have. Your joints, tendons, and hormone levels are different now. A full-body routine is superior for several reasons.
First, it increases frequency. With a full-body plan, you train muscles like your legs and chest three times per week instead of just once. This repeated stimulus is a powerful signal for muscle growth. Second, it builds in recovery. You lift for a day, then rest for a day. This gives you four full recovery days each week, which is critical for managing fatigue and preventing injury. A body-part split often has you in the gym five or six days a week, leaving little time for your body to repair itself.
Think about the math. A split routine might have you do 16 sets for your chest on Monday. A full-body routine has you do 5 sets for your chest on Monday, Wednesday, and Friday. That is 15 total sets for the week, but distributed in a way that allows for better performance and recovery in each session. You are less likely to get excessively sore, which means you are more likely to stick with the program. The goal is not to annihilate your muscles in one session. The goal is to stimulate them just enough, consistently, over many months. Here's exactly how to do it.
This plan is simple by design. Complexity is the enemy of consistency. You will perform one of two workouts (Workout A or Workout B) three times a week on non-consecutive days. For example, Monday, Wednesday, and Friday.
Your entire program will be built around five exercises that work multiple muscle groups at once. These are the most efficient movements for building strength.
Mastering the form on these is your only priority at the beginning. Watch videos, read guides, or consider a single session with a trainer to learn proper technique. Good form prevents injury and ensures you are working the intended muscles.
Do not guess your starting weight or lift with your ego. Start too light. The goal is to find a weight you can lift for 5 reps with perfect form, where the last rep is challenging but not a struggle. To find this, start with just the empty 20kg (45 lb) barbell. Do 5 reps. If it's very easy, rest for a few minutes and add 5-10kg (10-20 lbs). Repeat this process until the speed of the bar slows down on the last couple of reps. That is your starting weight for your first real workout.
You will alternate between two workouts. All exercises are done for 5 sets of 5 reps (5x5), except for the deadlift, which is 1 set of 5 reps (1x5) because it is very demanding on the nervous system.
Workout A: Squat 5x5, Bench Press 5x5, Barbell Row 5x5
Workout B: Squat 5x5, Overhead Press 5x5, Deadlift 1x5
Your schedule will look like this:
Week 1: Workout A, Workout B, Workout A
Week 2: Workout B, Workout A, Workout B
Week 3: Workout A, Workout B, Workout A
Always take at least one day of rest between workouts. Never train two days in a row.
Progressive overload is the goal. This means you must do more work over time. The simplest way to ensure this is by adding a small amount of weight to each lift every week. The smallest plates in the gym are usually 1.25kg (2.5 lbs). Add this amount to each side of the bar. This small, consistent increase is the secret to long-term progress.
To measure your work, you can calculate your training volume. The formula is simple: Sets x Reps x Weight. For example, if your squat is 5 sets of 5 reps with 60kg, your volume is 5 x 5 x 60kg = 1,500kg. The next week, you might lift 62.5kg. Your new volume is 5 x 5 x 62.5kg = 1,562.5kg. You can see your progress in clear numbers.
Manually calculating volume for every exercise is slow. The Mofilo app tracks this for you automatically, showing your progress without the extra math. This helps you see if you're actually getting stronger.
At 40, your mantra should be 'train smart, not just hard.' Your ability to stay consistent depends entirely on your ability to stay healthy. Unlike your 20-year-old self, you can't afford to be sidelined for weeks with a preventable injury. Here’s how to build a resilient body.
Never lift a heavy weight with cold muscles or stiff joints. Your warm-up is not optional. It prepares your body for the work ahead, increases blood flow to the muscles, and lubricates your joints. Dedicate 5-10 minutes before every single session to this routine.
After your dynamic warm-up, you need to perform warm-up sets for your first main exercise. The goal is to gradually introduce the movement pattern to your nervous system with increasing weight before you hit your heavy 'work sets'. This is crucial for performance and safety.
Here’s an example for a work set of 5 reps at 100kg (225 lbs) on the squat:
Do not rest long between these warm-up sets. They should not be tiring. They are for practice.
After your last set, don't just pack up and leave. A 5-minute cool-down helps your body begin the recovery process. Walk on the treadmill for a few minutes to bring your heart rate down gradually.
This is also the best time for static stretching. Your muscles are warm and pliable. Hold each stretch for 30-60 seconds, focusing on the major muscle groups you just worked (chest, back, hamstrings, quads, glutes). This can help improve flexibility and may reduce next-day soreness.
You cannot out-train a bad diet. This becomes even more true after 40. The effort you put in the gym will only yield results if you give your body the raw materials it needs to recover and build muscle. You don't need a complicated diet, just a focus on two key numbers: calories and protein.
Calories are energy. To build muscle, you need to be in a slight caloric surplus, meaning you consume slightly more energy than you burn.
Track your weight for a few weeks. If it's increasing by about 0.5 lbs per week, you're in a good spot. If it's not changing, add another 100-200 calories. If it's increasing too fast, reduce calories slightly.
Protein is the building block of muscle. Without enough of it, your body cannot repair the muscle fibers you break down during training. This is the single most important nutrient for your goals.
Spread your protein intake throughout the day over 3-4 meals. This helps with muscle protein synthesis. The rest of your calories will come from carbohydrates (for energy) and fats (for hormone function). Focus on whole food sources like rice, potatoes, vegetables, fruits, and healthy fats like avocado and nuts.
Set realistic expectations. You are not going to look like a bodybuilder in 12 weeks. The first 1-2 months of progress are primarily neurological. Your brain gets better at recruiting your muscle fibers, so you get stronger very quickly. You should be able to add 2.5kg (5 lbs) to your lifts almost every single workout during this phase.
After about 8-12 weeks, this rapid progress will slow down. This is normal. It means your body has adapted, and now you need to start building new muscle tissue to get stronger, which is a slower process. This is where many people get discouraged and quit. Understand that this plateau is a sign of success, not failure. At this point, you might only be able to add weight every other week, or once a month.
Visible changes in the mirror usually take longer. You might feel stronger and notice your clothes fitting differently within 6-8 weeks. Significant changes in muscle size often take 3-6 months of consistent training and proper nutrition. Focus on the numbers in your logbook, not the reflection in the mirror. If the weight on the bar is going up, you are succeeding.
No. You can absolutely build muscle and strength after 40. The process might be slower than for a 20-year-old due to hormonal changes, but the fundamental principles of lifting and nutrition still work. Consistency is the most important factor.
Three non-consecutive days per week is the ideal starting point. This schedule provides an excellent balance between training stimulus and recovery time. More is not better, especially when you are just starting out.
Yes, but do not let it interfere with your lifting. Two or three sessions of 20-30 minutes of low-intensity cardio per week is beneficial. Activities like walking on an incline, cycling, or using an elliptical on your rest days can improve heart health and aid recovery.
Free weights like barbells are generally better. They force you to stabilize the weight, which engages more muscles and builds more functional strength. Machines are safer if you have no one to spot you, but they should supplement your free weight training, not replace it.
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