Can some one please explain....

RosieGB33nz

I see so many people saying they are doing P90X or P90 or C25k........ What are these??

hroush

google is your friend

P90X / P90 - workout DVD set from beach body. they are a favorite here and work great.

C25k - couch to 5k running program, found at c25k.com . A great way to start running.

LyssaMarie13

p90x is nuts it will kick your butt! It's a dvd work out program basically.
http://www.beachbody.com/product/fitness_programs/p90x.do?t=p90x2e1&code=SEMB_GOOGLE_P90X&extcmp=e79dc8a93ec8447a&ef_id=TLtIeQqoEGQAAGifgvoAAAzm:20110601010637:s

And c25k stands for couch to 5k. It is for people who really haven't ran in a while. you can google it and print off the program. It's free. Where P90X you pay for, because of all of the dvds and such!