sprinting up the stairs. this week, staying well looks at something called functional fitness. and that could change things for them. >> as ages creeped up on me, i noticed little things. going up the stairs. i'm a little out of breath. go hiking with my family, and i'm the last in line. i'm much more calling up to the kids "can you bring this downstairs," or if i'm sitting down, "can you grab that glad of water." i'm not looking to be a bodybuilder. i wanted everyday functionability. >> ten seconds to go -- >> functional fitness is where you're training for everday movements. we don't think about how squat will turn into an everyday world. we squat every time we sit, getting off a car, putting things into overhead compartments, that's a shourltd press. >> i feel it in my stomach. >> they had me do exercises and ask how does that feel, where are you feeling that? >> exercise should not be about getting injured. if we find that a client has an