Greatest Eva
New member
Ok so I've been doing some research and everywhere I see that is says that sprinting is a great way to build muscles cause it release human growth hormone(HGH). Is this true and how effective is this HGH. Can you totally rely on a sprinting workout to build muscle? Coz my friend is doing sprinting with no weight training workout and he is gaining muscle fast. Please if you answer give a good explanation I really need to understand this.