Weight / Fat loss

Breath for 10 mins into this contraption that measures gas volume and makes the calculation. Sorry I can't be more specific. The web calculators are not ideal or particularly accurate.

Limit muscle loss or negate it by only consuming protein. Sorry don't have time to elaborate but this particular diet is based on medicine / science. Very successful but expensive (there are ways around that to an extent) and hardcore. Called Alizonne.

How do you measure metabolic rate? I know there's places on the web but not sure how accurate they actually are.

I figure if you can comfortably keep under your rate you'll loose weight and be more happy about it as it won't be a crash diet (limit your losses of muscle mass)

I'm also off the sugar now (bar natural sugar, fruit) because when I've eaten sugary things I'm getting a really bad stomach so this may be a long term choice rather than short term.