Sounds rather error-prone. If I wanted to fool myself into thinking that I'd swapped a lot of fat for a lot of muscle, what could I do? I'd try to increase dens

Sounds rather error-prone. If I wanted to fool myself into thinking that I'd swapped a lot of fat for a lot of muscle, what could I do? I'd try to increase density from one volume measurement to the other -- I could breathe in a lot of air during one measurement, and eat a lot of.. I dunno, fruit cake before the other.