There's no sleep skipping hack and still being healthy. Our bodies require proper sleep as much as proper eating. The next time you wish to skip your night's rest to do something else, think about the consequences and ask yourself if it's worth it.
For many years, the thought was: we need to consume fewer calories than we burn in order to lose weight. However, in recent years, we have discovered that what we consume is much more important and will have a larger impact on our weight loss.
Metabolic type and rate vary from person to person. Understanding your metabolism is step one to manage your fitness journey and ability to lose and maintain weight.