Too many tough days at the office or ongoing arguments with family members can sabotage your weight-loss efforts, says Jeremy Shore, C.S.C.S., a group education director for Matrix Fitness. When your body is stressed, your cortisol levels rise, telling your body to store fat for protection, says Shore. While that might be helpful in the Amazon, it's not going to save you from your boss's emails. Shore recommends deep nasal breathing to relax. "This directs air into the lower lobes of the lungs where there are a greater number of parasympathetic nervous system receptors—stimulating repair and recovery while calming the mind," he says. Inhale and exhale deeply from the nose, spending five to eight seconds on each inhale and five to eight seconds on each exhale.
This may explain why the fat-burning effects of eating more protein were confirmed in a study published in the American Journal of Physiology. One group was fed a high-protein diet (just over 1 gram per pound of body weight per day) while the second group consumed an amount closer to the lower recommendation of the RDA (recommended dietary allowance). The group eating the higher-protein diet burned the most fat.