I've just signed up for a gym membership for the first time in my life... Due to metabolism, I'm not fat, but I'm still really out of shape... what should I start with? [more inside]
posted by twiggy on May 6, 2008 - 25 answers

How often and how hard do I need to work out in order to maintain the level of aerobic fitness I have right now? [more inside]
posted by slenderloris on Jan 9, 2008 - 9 answers

Switching from losing weight to gaining muscle. What do I do? [more inside]
posted by Pontius Pilate on Apr 19, 2007 - 15 answers

How can I ensure that I don't puke (or get nauseous) when I start working out with a trainer? [more inside]
posted by EastCoastBias on Sep 21, 2006 - 20 answers

What are the best supplements to take to make it to that "next level" of muscle-mass gain? [more inside]
posted by antifuse on Mar 21, 2006 - 23 answers

What qualifications should I look for in a personal trainer? What do the ACE certifications actually mean? I'd like to hire a trainer for a few sessions, but I really don't want to hurt myself or hire a nut. Please help me sort through the options! [more inside]
posted by barnone on Feb 12, 2006 - 4 answers

Why do some people have veins that pop out of their biceps and shoulders, while others who work out don't? [more inside]
posted by dead_ on Nov 29, 2005 - 17 answers