Five reps or ten reps: how should you choose a rep range?

If your main goal is to improve a heavy lift, start with sets of about 3–6 reps. If your main goal is muscle growth, 6–15 reps is a convenient working range—but not a magic one. Five and ten reps can both build strength and muscle; choose the option you can perform safely, recover from, and progress over time. Research finds heavier loads tend to produce greater gains in one-rep-max strength, while muscle growth can be similar across a broad range of loads when sets are sufficiently challenging. Source: resistance-training load meta-analysis

Choose reps for the result you want

For strength: Lower-rep sets let you practice handling heavier weights, which closely resembles testing a heavy single. Try 3–6 reps on a main lift such as the squat, bench press, or deadlift. This is a practical starting point, not a rule that every strength exercise must be heavy. The research comparison found an advantage for higher loads in maximal-strength improvement; it did not mean lighter training is useless. Source: resistance-training load meta-analysis

For muscle growth: Ten reps are often a useful default because they allow a challenging set without requiring an especially heavy load or a very long set. But five reps can also contribute, as can higher-rep sets. Reviews report broadly comparable hypertrophy across a wide range of loads, particularly when sets are performed with substantial effort. The exact best range for you is not established by picking one number alone. Source: network meta-analysis of resistance-training loads

A practical way to decide

These ranges are practical suggestions, not research-proven cutoffs. For any range, select a weight that lets you complete the reps with consistent form and finish the set feeling you could do only a few more. If technique breaks down, the set is too demanding for that moment; reduce the weight or stop the set.

Adjust based on the exercise and your week

You do not have to use the same rep target for every exercise. For example, you might do five reps per set on a barbell squat and ten to twelve on a leg extension. If five-rep sets leave you feeling worn down or make it hard to keep technique steady, use a lighter weight and more reps. If ten-rep sets become easy, increase the weight modestly or add reps before changing the whole plan.

Track progress in a simple way: keep the exercise and rep target steady for a few sessions, then add a small amount of weight when you can complete all planned reps cleanly. If you like training with other people, Actively can help you find nearby workout partners and active friends through shared interests, mutual matching, and chat; it is not a workout logger or coaching app.

Bottom line: Choose five reps when heavy-lift practice is the priority; choose ten as a flexible starting point for general muscle-building work. Most people can use both, adjusting the weight and rep target to the movement, their technique, and what they can consistently recover from.