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.

Are you Army Strong? Find out how you stack up against the men and women of the United States Army by taking the Army Push-Up test.

For this week’s STACK Challenge, we’re borrowing Army Push-Up standards, so your upper arms need to be parallel to the ground for a Push-Up to count. You’re only allowed to rest by sagging or flexing your back—no resting on your knees or lifting your hands or feet off the ground.

The Challenge

Complete as many Push-Ups as possible in two minutes.

How Do You STACK Up?

(U.S. Army standards for 17- to 21-year-olds)

Rookie: 42 Push-Ups (male), 19 Push-Ups (female)
Pro: 56 (male), 30 (female)
All-Star:  71 (male), 42 (female)

How to Win a STACK T-Shirt

1. Complete the challenge by March 23
2. Follow STACK on Twitter (@stackmedia)
3. Tweet your results and include #STACKChallenge

The winner will be announced in next week’s STACK Challenge.

Get Better

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

• Push-Up Ladder
• Resisted Push-Ups
• Close-Grip Push-Ups