Decision fatigue is real, and it could be hindering your ability to shed some pounds. A study published in Social Science and Medicine found those who have high levels of what’s called “skill discretion”—i.e., they exercise control by getting things done themselves—tended to have lower BMIs. In contrast, those who are constantly deciding on courses of action for others may eventually come down with decision fatigue and make ill-informed choices, such as ordering that piece of cheesecake for dessert.
“Anytime you’re stressed, you probably go for food,” Dr. Seltzer says. (Have we met?!) That’s because cortisol, the stress hormone, stokes your appetite for sugary, fatty foods. No wonder it’s associated with higher body weight, according to a 2007 Obesity study that quantified chronic stress exposure by looking at cortisol concentrations in more than 2,000 adults’ hair.

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