Three years after previously setting this world record, the 40 pound pack was back on Mohammad's back whilst attempting push ...

The timer was set. 30 seconds on the clock. I went for the most Magic Push-Ups ever done — and the final number speaks for itself. You’ve got to see this.

Sit on the bench with your dumbbells resting on your upper legs.

Find out how many sit-ups after 55 signal a strong, healthy core and use this 60-second test to track your strength over time.