Someone on IronGarm (don't look it up if you're easily offended) put it best: "Tim isn't very strong and is a Jenga of fairly serious injuries that a smarter trainee would avoid."
"Gaining" (actually regaining) large quantities of muscle in a short period of time is an old Iron Game trick (the "Colorado Experiment" with the Nautilus guy and Casey Jones IIRC). You can't gain nearly as much muscle as someone else can regain.
As for the other strategies to 'gain' this much 'muscle' while 'clean', the high points are (a) dehydration, (b) steroids and/or exogenous testosterone and (c) a modicum of fat gain (which on a normal muscular physique won't be that notable and, most importantly, (d) a willingness to claim that you haven't done a/b/c whether it is true or not.
Tim is a master of 'hacking' these kind of demos but it would be more impressive if he tried doing something more sustained where there isn't a short-cut to success. For example, compete in a sport where there is a lot at stake and a high number of well-prepared competitors. Not, for example, by finding a rules loophole in some obscure Chinese kickboxing event and winning it through a combination of extreme weight cutting and pushing other people over (one of his claims to fame as a martial artist).
"Gaining" (actually regaining) large quantities of muscle in a short period of time is an old Iron Game trick (the "Colorado Experiment" with the Nautilus guy and Casey Jones IIRC). You can't gain nearly as much muscle as someone else can regain.
As for the other strategies to 'gain' this much 'muscle' while 'clean', the high points are (a) dehydration, (b) steroids and/or exogenous testosterone and (c) a modicum of fat gain (which on a normal muscular physique won't be that notable and, most importantly, (d) a willingness to claim that you haven't done a/b/c whether it is true or not.
Tim is a master of 'hacking' these kind of demos but it would be more impressive if he tried doing something more sustained where there isn't a short-cut to success. For example, compete in a sport where there is a lot at stake and a high number of well-prepared competitors. Not, for example, by finding a rules loophole in some obscure Chinese kickboxing event and winning it through a combination of extreme weight cutting and pushing other people over (one of his claims to fame as a martial artist).