Don’t do PEDs

Are you riding 8 hours a day every day? No? Get a well-fitting seat that doesn't make your balls go numb and you'll be fine.

(AFAIK link between cycling and TC is inconclusive, link papers if you know otherwise)

There is no consensus that cycling increases the risk of testicular cancer.

see page 6: https://link.springer.com/content/pdf/10.1186/s12885-018-409...