Don't exercise, eat what you want and still lose 30 pounds in 30 hours. We Americans are fat, overweight, under-lean, adipose challenged and starving amidst gluttony. Most people don't see FAT like that. And obesity is not a function of age. The physically educated generation of the last several generations is being replaced by the physically ignorant.
Ignorance is fatness.
Primatene tablets is one brand name example and there are many more generic brands available nationwide. Japanese scientists first described ephedrine in plants in the late 19th century. Many of the actions of ephedrine are mirrored by caffeine, although their magnitude may be lesser. Increased metabolism doesn't necessarily result in decreased fatness. Ephedrine does this caffeine does this.