Gunnar Peterson : (3) " Hydration is everything. Think of this: your muscles are 70-plus percent water – how are you not drinking water during a workout? I get the whole, ‘Let’s challenge ourselves; let’s do that prison, tough guy thing,’ but at the end of the day, you’re underperforming. " - Gunnar Peterson " You should be doing something for your body every day. One day it could be a high-intensity class, and the next, it could be as simple as a 20-minute walk with the dog. " - Gunnar Peterson " I really like battle ropes. They’re so versatile; you can get a terrific workout doing a ton of different exercises with them. My clients like them because they’re a good way to get aggression out, too. Had a bad day? Take it out on the ropes! " - Gunnar Peterson