In this 2009 Alpilean Reviews , specialists found large individuals have lower internal heat levels than slimmer individuals. This distinction in internal heat level prompted lower metabolic productivity - or a more slow digestion. Less fatty individuals will quite often scatter additional calories as intensity, while overweight individuals consume less calories very still. Scientists found this distinction was critical: they gave overweight and thin individuals an additional 1,000 calories each day. They found more streamlined individuals consumed 60% of the overabundance calories, while overweight individuals consumed "practically no part."