how much cardio is too much?

[Juice Authority]

how many days a week should you do cardio and for how long?

Not sure what your goals are but to answer your general question there is never enough cardio you can do. You can do as much or as little as you want. There are times when I'm doing 3hrs + cardio/ed but I'm training for endurance. Triathletes would laugh at 3hrs of cardio/ed.

[Ripped Mass]

Not sure what your goals are but to answer your general question there is never enough cardio you can do. You can do as much or as little as you want. There are times when I'm doing 3hrs + cardio/ed but I'm training for endurance. Triathletes would laugh at 3hrs of cardio/ed.

I have read that if you are simply trying to burn fat a series of hi/lo intensity is best. Say you run at 8mph for 6 minutes, then lower to 4 mph(cool down) for 2 minutes, then back up so on and so forth in intervals. As far as endurance and heart health exercises I am clueless, but hopefully I never have to worry about that-CARDIO SUCKS!!!