Q: I lost around 12-13 kgs in a period of the 3 previous months.I used cardio+diet+weight training together but my weight training was stable(not progressive)meaning that i was exercising always on same kgs.Did this weight training help me not to lose any muscles during my efforts to get leaner?Also now i reached a point where i do nothing for some days and still lose kgs while eating normal like before.How this can happen?People at gym adviced me to try some bulk up eat more and almost eliminate all cardio i do.This should help me obtain muscles in time and gain some kgs more.Also i should eat a lot more then now.I would appreciate your opinions on all these.

A: Unless you used very light weights, the weight training you did helped you preserve some muscle that you would've lost otherwise. Of course, if you did progressive weight training where you upped the weights as you got stronger you would've had even better results. Your weight loss was also on the fast side, about a kilo per week, when optimally you would lose it at about a kilo every two weeks. So you probably did lose some muscle in the process, but I'm pretty certain you lost plenty of fat as well.

Your metabolism is high now, thanks to a good diet and exercising and that's why you're continuing to lose weight even when you do nothing. That will stop soon if you stop the diet and exercise.

Finally, the people in the gym gave you the right advice about bulking up (if obtaining more muscle is your goal). You will need to eat more to gain weight (slowly! As slow as 1 kilo per month) and continue weight training, preferably whole-body and progressive. If you fill out http://www.mikesfitness.com/content/fitnessguide you will get a complete diet + training suggestion. Alternatively, you can just start slowly adding calories (mainly carbs and some protein) to your existing diet until you start gaining weight. And switch to progressive weight training, of course. Remember to gain weight very slowly to avoid unwanted fat gains. Good luck!