I am an advocate of the "chaos theory" of fitness training. You should always vary your workout routine. Keep it fresh. Challenge yourself without overdoing. Never let the ego get in the way; you may ...

Fitness activities and interests: Volleyball, basketball, martial arts. Plank with hip rotation The move: A plank with an added rotation that further challenges your core musculature. Works on: Core ...

The plank challenge is a 30-day program to strengthen the core and build up endurance. Each day of the challenge, you’ll gradually increase the amount of time that you hold a plank. By day 12 of the ...