Firstly, the abs are just like any other muscle in the body, and you can and should treat them the same way. Anyone who tells you the abs are any different to any other muscle, doesn't know what they are talking about.
And just like any other muscle, it is fine to do cardio nearly every day, but you should rest them 48-72 hours between strength training workouts. ST works by creating microscopic tears in the muscle fibers, which then grow back stronger - but it takes time for this to happen. If you are ST'ing your muscles every day, then they never get the chance to get stronger.
Many people justify working the ab muscles every day be saying they are really doing light cardio moves, rather than challenging strength training.
But the truth is that there is no benefit to doing cardio ab work every day. Burning fat is an all-body process, not a localized one. Energy is delivered to the muscles via the bloodstream, NOT from being absorbed from surrounding fat stores. Doing ab exercises does NOT reduce belly fat.
The abs are also relatively small muscles, and won't burn a lot of calories, or get your heart and lungs pumping like working the larger muscles in the body (eg. the lower body) do. An ab focussed cardio workout is really pretty ineffective, and an inefficient use of your time. So it doesn't really create many benefits.
A strong core is important for posture and balance, and strength training the core has definite benefits. But like any other strength training, it should be genuinely challenging, and be done every 2nd or 3rd day. Also, abs are only one part of the broader core group of muscles - you should be working the back, hip flexors, obliques etc in an overall core workout, not focussing exclusively on the abs.
So anyone recommending doing ab workouts every day isn't really recommending anything dangerous, but they are confused about the benefits of exercise, and showing pretty poor overall exercise program design.
Edited by: MOTIVATED@LAST at: 12/17/2013 (06:12)
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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