Re: Advice needed. URGENT!
If he's offering you free training, then I would watch out for a snag, that you dont get caught up into a professional scheme, or be forced into committing yourself into something you're not mentally or willingly prepared to do. If it's gym fees, upfront, and you are paying for it, then you can afford yourself the ease to pull out at anytime. I dont think this guy will let you off the hook if you change your mind.
THe other thing you can do is say you're willing to give it a shot, BUT AFTER A WEEK YOU MAY POSSIBLY NOT WISH TO CONTINUE. This just sets him up for lower expectations, and if he agrees to take you on, on a trial basis then you have nothing to lose by taking that opportunity. That way you are protecting yourself.