Tongkat Ali is another great herb proven to increase levels of testosterone. “None of the homeowners featured on the show know they’ve been chosen to receive a home makeover – it’s a surprise, so I can’t say any more about the episode we’re involved in at the moment. You’ll have to tune in and see it for yourself!” The bioactive Glygopeptide compounds in Tongkat Ali have been proven to increase free testosterone and decrease SHBG levels in human medical trials.