theres a class called bums and tums..lol..to tone up those areas and boxfit an intense aerobics class.....is that the samr thing..?
Not nearly. But you're better off doing this if you're not used to intense exercise, know that you will give in under high duress or simply want to 'break in'. Again, the key difference is exercising intensely enough to trigger anaerobic metabolism - exercise hard enough to cross the Lactate threshold: the point at which lactic acid begins to accumulate in the bloodstream (and give you that intensely burning feeling inside the muscles). The key also is to maintain that threshold throughout the exercise regimen- which is why exercising in this fashion can never last more than 25 minutes.
Aerobic exercise works only at a pace sufficient to metabolize lactic acid as it is being produced. So rather than 'burning' it through exercise, lactic acid is removed from the body through other processes- contributing to that comfortable, 'easy going', araamdayak feeling through the exercise. This is not the type of exercise you want to target- it is neither efficient nor will it produce the desired results in a considered time frame. If you truly are serious, exercise scientifically - understand the principles behind your body, its limitations, the most efficient means of getting desired results (understand what your 'desired results' are as a prerequisite to getting there), and extrapolate the principles in that book I gave you to a customized, optimum training program.
However, realize that the information I'm providing you with is under the assumption that you are already fairly fit and capable of indoctrining yourself into a reasonably rigorous training porgram. If you, by your own judgment, are not, then take the time to break in: begin with the simple: the walking, stretching, bicycling - move to an intermediate range: the 'bum-tums' LOL :), the cross-fit, the stairclimber, the elliptical,... - and then on to a program of this sort: high-performance, high-endurance training preferably on Nautilus equipment or cardio machines.