Three-Point Sprint Start

Trains the Hamstrings.

How to do it

Set up at a start line in a three-point stance: one foot forward with the toes just behind the line, the other foot back, and the hand on the back-foot side on the line.
Set the hips high, above the shoulders, with the weight leaning forward over the front foot and the free arm bent behind you.
On the signal, drive the back leg forward and the front leg hard into the floor, and swing the free arm through.
Keep the body low and leaning forward for the first few strides, driving the floor back rather than standing up.
Let the body rise gradually into an upright sprint over the next strides.
Sprint for the chosen distance, walk back and reset.

Standing up on the first step. The lean is held for several strides; popping upright wastes the drive.
Hips too low in the stance. They sit above the shoulders so the legs drive forward; a deep crouch drives up.
Stepping the back foot short. The first stride is a full drive forward; a short shuffle step loses the start.
Looking up at the finish. The head stays in line with the leaning body; lifting it brings the torso up early.