Is it true that you lose muscle three times faster than you gain it?

Last night I went out for a meal in a nice restaurant with my boyfriend. After a three course meal with two units of alcohol we drove home. We both felt very cold, despite being well wrapped up in a relatively warm car. On closer introspection, I realised that all my muscles were extremely tense, and I wasn't actually all that cold. I was completely unable to relax physically, even though I was totally at ease emotionally. My boyfriend reported the same sensation. I recall feeling the same way on many occasions after leaving restaurants.

Can anybody offer an explanation or indeed a remedy?

I train 10 times a week as a competitive swimmer but I have thee weekend off. When I return on a Monday Morning I feel really bad. I also build up a lot of lactic acid during the week in the pool as I am quite muscular.

Why is it? and could someone suggest some ways of helping me? thanks.

In common parlance, one would say the body 'burns' food, and, indeed, we are warm creatures due to some kind of exothermic reaction(s) inside us, yet our muscles and brain work on electrical impulse. Is this the most efficient conversion of heat to useful energy we know of, or is the electrical energy converted from chemical potential energy somewhere?

I can only raise my left eyebrow by itself to look quizzical. My right eyebrow won't work in the same way, although I can do both at once. Any ideas why this is? I'm right-handed, if that helps.

Polly Asquith, Paris, France