Boost bands are amazing for tracking your testosterone levels. They truly are the best way to keep track of your heart rate when you go for a job, when you are in the gym, or even when you’re having sex. Either way, you will be able to keep a good log of your T levels. We have sold thousands of boost bands all over the world. You can find them on Amazon and various other huge websites as well. Our bands are of any age and it does not matter what field you are in. the bands will work underwater too. This is what you need.