Peter Attia· MD
so direct ketry is the most rigorous way and that is literally um you know kind of in a bomb cimeter right you're you're you're in a metabolic chamber and they are looking at um you know how much heat you're generating essentially and from that heat that you generate they're able to determine your total daily energy expenditure and then using an equation based on your oxygen consumption versus your CO2 production they can determine what from that is your BMR