Helps increase blood flow, and has been used to help support erectile health. that your progress is slipping, or it’s getting more and more difficult to obtain decent gains, your testosterone levels might be too low. The gel is applied to skin and once dry, you can swim, shower, and have contact with others. The patch also allows swimming, showering, exercise, and contact with others. All of these forms work equally well when the dosing is adjusted to achieve the desired hormone levels, and the decision about which form to use should be based mostly on your preference.