Trainers: This Unexpected Piece of Equipment Will Level Up Your Workouts originally appeared on Men's Fitness. Move over, ...

The Murph Workout -- a Memorial Day tradition that honors fallen Navy SEAL Lt. Michael Murphy -- is popular throughout the CrossFit and military community as a Hero-WOD, or Workout of the Day.

Press feet into ground and, as you stand back up, press sandbag directly overhead, extending elbows. As you lower sandbag to shoulders, immediately lower into next squat. Repeat. Do 15 reps.