There's no arguing that the seemingly humble V-in is a tough exercise, but we've got just the plan to help you master this core crusher. In one month, you'll graduate from 10 reps on Day 1 to 100 consecutive V-ins on Day 30.
As the weather heats up, make sure you're giving your body the hydration it needs to perform its best. Here are the basics on five different hydration options.
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