• Lie so lower back is on physioball, holding onto stable object behind head
• Keeping legs bent 90 degrees, lower them with control until feet nearly touch floor
• Raise legs and curl body to bring knees above chest
• Repeat for specified reps

Sets/Reps: 3x10-15

Coaching Points: Keep movement slow and controlled to avoid relying on momentum.

Richesson: This strengthens the hip flexors and lower abdominals. In absolute speed, you need this strength to hold the proper sprinting posture. A lot of guys are weak there, so they break down after 20 yards.