Can you link to any studies showing IF increased T levels substantially? I am genuinely curious. I have been considering doing IF (since I am half way there already) just for the longevity boosts and general body composition benefits.
and this is also an interesting experiment, where it actually drops with fasting:
http://www.precisionnutrition.com/intermittent-fasting/chapt...
But the hypothesis is that the body uses the testosterone more efficiently