Every week, a new STACK Challenge gives you an opportunity to test your athletic ability and win a STACK T-shirt. Take the challenge and enter to win a T-shirt by tweeting your results with #STACKChallenge.

This week’s STACK Challenge tests your quickness, agility, conditioning and explosiveness with nothing but a simple weight bench.

To complete the 30-second Bench Jump test:

• Begin on the left side of the bench with both feet parallel to the bench
• Jump laterally onto the bench with both feet
• Jump down to the right side
• Repeat as quickly as possible, counting each tap of the bench as one rep

The Challenge

Complete as many Bench Jumps as possible in 30 seconds.

How Do You STACK Up?

Rookie: Fewer than 15
Pro: 15-30
All-Star:  30+

How to Win a STACK T-Shirt

1. Complete the challenge by April 6
2. Follow STACK on Twitter (@stackmedia)
3. Tweet your results and include #STACKChallenge

Congratulations to @sarah hessler for winning last week’s T-shirt with her impressive performance in the Spider-Man Push-Up test.

Get Better

Not an All-Star yet? Get better by incorporating these exercises into your workout:

• Box Jumps
• Jump Rope
• Driveway Workout