Firefighters were assigned to either a Mediterranean diet or a time-restricted eating protocol with a self-chosen 10-hour eating window.

“the only thing we'll be doing is ask them to eat within 10 hours and hopefully we can do this so consistently between the days that they're working and not working yes so that means if they're from 8 A.M to 8 A.M working then the next day then they go home then they're going to eat on the same schedule they did when they were at the fire Firehouse yeah but while at home so they're not allowing themselves to to deviate from that yeah so we we thought whether they can do it or not because the number one goal or the primary outcome in this clinical trial was feasibility can they do it and then second was if they do it then what happens to their blood sugar and weight and all this other stuff”