Focus on form.
No matter how much you’re lifting, if your form is crap, then you won’t benefit and you risk injury, Pags says. Ask a trainer how to correctly perform rows, chest presses, triceps kickbacks, and curl variations, he suggests. Then set up in front of a mirror to keep an eye on technique.
Fatigue the muscle.
To reap heavy-lifter rewards, Geisel says you need to exhaust the muscle 100 percent, meaning you can’t do another rep at that weight. If you’re new to strength-training, practice your form with a lighter weight, then start with 10 to 25 pounds for eight to 12 reps until fatigue. If your form is dialed, go for fewer reps (five to eight) and more weight (25 to 40 pounds).
Go for broke.
If…