Slow holds
A slow hold is a gentle squeeze held for several seconds while you keep breathing, followed by an equal rest. These train endurance, the ability of the muscle to stay switched on while you cough, lift, or stand for a long stretch.
Start with three-second holds and three-second rests. If you have been practising for a few weeks and the holds feel controlled, extend toward five seconds, which is the number Cleveland Clinic's men's guide uses in its standard routine.