What different rep ranges do and which ones to use for your goals
A "rep" (repetition) is one complete movement of an exercise — for example, one push-up. A "set" is a group of reps done without stopping. So "3 sets of 10 reps" means you do 10 reps, rest, do 10 more, rest, then do your final 10.
Low reps with heavier weight build raw strength. This range is great for compound movements like squats, deadlifts, and bench press. Rest 2-5 minutes between sets. This range is best for intermediate/advanced lifters who have solid form.
This is the most popular range for building muscle (hypertrophy). It balances weight and volume effectively. Rest 60-90 seconds between sets. This is the ideal range for most beginners because the weight is manageable and you get enough practice reps.
Higher reps with lighter weight build muscular endurance and can help with fat loss. Rest 30-60 seconds between sets. Great for isolation exercises, accessory work, and circuit-style training.
If you're just starting out, stick to 8-12 reps for most exercises. This gives you enough reps to practice form while still building strength and muscle. As you get more comfortable, you can experiment with different ranges.