4 Minute Muscle
4 minute muscle is designed to push your muscles beyond their limits to place them under tremendous stress in a very short amount of time. Studies and experience prove that placing your muscles under new stresses will force them to change. How will they change? By getting bigger and stronger.
The goal of 4 minute muscle is to do as many reps as you can in 4 minutes with a minimum of 40 reps.
Here's how you do it:
Step 1: Set your timer for 4 minutes
Step 2: Pick a resistance that will cause you to fail between 15 and 20 reps in the first set
Step 3: Start the timer and start doing reps to failure.
Step 4: Repeat Step 3 until your timer alerts you that the 4 minutes are up.