High-intensity exercise leads to sympathetic nervous system activation, increased breathing rate, and muscle burning due to lactate buildup.

“what happens in that and you'll get what you know I've been a fan of form of exercise we coined the term peak peak fitness exercises and essentially they're high intensity and you know you're using a high intensity when you're activating the type ii fibers and what happens is your sympathetic nervous isn't executive and you start to sweat your breathing rate goes up and that happens real quickly despites it's light weight I mean you just be blown away when you feel this and then you start to feel burning in your muscle which is the lactate because it's acidic so you get a little burning in there and that's good”