Most men do not think about testosterone until they start to feel a little off.
You wake up without morning wood as often.
Recovery after working out is slower than it used to be.
You are dragging by midafternoon, a little softer around the middle, and your patience is thin at home.
That is not just age. It is usually lifestyle working against your hormones.
Testosterone matters because it supports muscle, bone, drive, mood, and sexual function.