When performed properly, weighted crunches are a great strength-training exercise designed to activate your lower abs more than a regular sit-up or crunch. Weighted crunches can improve your cardiovascular system.24 Şub 2022
When performed properly, weighted crunches are a great strength-training exercise designed to activate your lower abs more than a regular sit-up or crunch. Weighted crunches can improve your cardiovascular system.24 Şub 2022