Q: i do weight training 3 days a week but the days except them i dont sleep at night but in the morning cause of my night work.Does this affect my progress to build some muscles?When i do weight training i sleep early at night these days.

A: Rest and sleep are very important! That's when you actually build the muscles as your body repairs the damage done in the gym and puts in a little extra so your muscles will be ready for more punishment. So a regular sleep pattern is good and getting 7-8 hours/day is very important. It doesn't sound like you have too much choice in when you can sleep, so just make sure you get those 7-8 hours/day one way or another if at all possible. Also make sure your diet is good! If you're not sure, fill out http://www.mikesfitness.com/content/fitnessguide specifying 'Gain Muscle' for a diet suggestion.