Sweat Activated T-Shirts from Lerage have a hidden message that only shows when you sweat. These Tees will guarantee you do not cheat with your workout. One of the oldest sayings is “If there is no sweat there is no gain”. This is true and our hidden message will help you work out with a goal in mind. SWEAT. Regardless of your workout goal, to increase muscle mass or lose weight sweating is part of the process. Sweat is your body’s way to cool off and remove those unwanted substances stored in your liver. Do not cheat yourself, sweat and notice the difference in your lifestyle.