High Intensity Interval training is a time effective and time efficient exercise. A workout can take 30 minutes for the unfit to 16 minutes for the fit person.
While liposuction & tummy tucks give a flat stomach immediately, these are not sustainable. This is because you are only treating the symptoms & not the root cause.
The best way to lose weight fast is by following the principles that govern weight loss. Following these principles will ensure that the weight comes off and stays off.
When running for weight loss, you need to understand what type of running gives the most effective weight loss results. Train like a sprinter not marathoner.