Most runners need more muscle mass, or strength and control in the muscle mass they have to boost their performance.
Men's Fitness on MSN
Develop more defined arms with my dumbbell triceps workout
Build bigger arms with this dumbbell triceps workout from body transformation expert Diego Carrete The post Develop more ...
Woman & Home on MSN
Move over, Pilates - an expert trainer recommends plank rows to build a stronger core and arms
"Instead of lifting a dumbbell, focus on drawing your elbow up towards your ribs and squeezing your shoulder blade in.
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