Should I work out more?

Is there any work outs, types of runs, or sports that can boost my staminaa,

How do they work, and what exactly do they do?

does that ab belt achully work? you know that contoar belt?

is running up and down stairs a good work out? if so, how many should I do a day?

I received an email about the Kangen Water and it sounds to good to be true, i just want to know if its a scam or is it leg...

what are the major superficial muscle groups? what do they do? how do they work?

What are good work out videos for yoga, pilates, aerobics, etc.? Is there a specific trainer and or brand that's good?

Remember those machines where a belt wrapped behind you and made your fat shake while you stood there. how were those suppos...

I am 13. can working out stunt my growth?

In the plank, wobble cushion, step ups and rowing machine does anyone know what the muscular contractions are?