Dear Sarah, I would avoid Bikram or hot yoga. Similar to overheating your jewels from the outside in a hot tub, fevers cook them from the inside. Turek, My husband was recently diagnosed with NOA. The hot water is responsible for affecting the immature and developing sperm. But still ttc with no luck up till now. This can take three months in order to produce the mature sperm cells.
If sperm were money, they would be rich!
Only way to know is to stop entirely and wait probably months, checking semen quality every 3 months. What are the causes and treatment of male infertility? My husband is in a similar situation. This is essential that you must encourage your husband to go out of the hot tub. Because of this, there is a risk that you may not actually recover your sperm counts.