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Lie on your stomach with your arms straight by your ears.
Raise your arms and legs simultaneously as you squeeze your glutes and squeeze your shoulder blades together.
From this position, bend your elbows and squeeze them together in a W shape.
Hold briefly, return your arms to straight, then lower back down.
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Krista Stryker is an NSCA certified personal trainer and the founder of 12 Minute Athlete, a popular website and app helping thousands of people get fit in as little time as possible. A HIIT workout regimen consisting of incredibly short, effective workouts based on calisthenics, cross-training and functional fitness, 12 Minute Athlete helps athletes of all level get in the best shape of their lives with minimal equipment and no gym membership.