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Oxygen Challenge Coach Jamie Eason Middleton on Muscle Building

Don't be afraid to build muscle — it's what gives us shape.

Get full access to Outside Learn, our online education hub featuring in-depth fitness and nutrition courses and more than 2,000 instructional videos when you sign up for Outside+.

Oxygen Challenge coach Jamie Eason Middleton (@jamieeasonmiddleton) shares why you shouldn’t be afraid to build muscle.

Build, shape and be tighter and more fit with Middleton’s approach.