To reach 100 reps each day, Heria completed 50 per arm. He could split the reps into as many sets as needed and spread them across the day. After each session, he rated the difficulty and fatigue.

Natalie Anderson of 'The Traitors' and 'Survivor' shares her arm workout routine and tips for how others can get her muscles. She shares what strength means to her.

Grip strength is necessary to maintain mobility and independence as you age. Here are five ways to improve it.