Effects of Impaired Sleep on Energy Balance

The main aim of this study is to examine the effects of restricted sleep on energy and substrate metabolism as well as relevant hormonal systems that might be involved in the underlying mechanisms. The investigators hypothesize that short-term sleep curtailment in adolescents is accompanied by 1) increased hunger and desire to eat; 2) increased spontaneous energy intake; 3) reduced spontaneous physical activity; and 4) increased fluctuation in hormones in a way that could favour a positive energy balance and potentially weight gain on the long run.