There is no scientific evidence that sexual activity or masturbation affects physical height, bone development, or overall growth in teenagers.
The phrase "drained balls" in the context of teenagers typically refers to a slang term related to sexual activity or, more specifically, the feeling of fatigue or completion following ejaculation. In a medical or physiological context, it is important to separate myth from reality regarding male reproductive health and energy levels. The Physiology of Semen Production
Consuming adequate zinc and protein, which support reproductive health.
For teenagers navigating these changes, the most important factors for maintaining energy are not related to "draining" the reproductive system, but rather: