I need to build some lean muscle and add muscle mass, but how?

I have heard about Flaxseed oil, Fish Oil, and DHA supplements. Which is the best supplement to take while pregnant and why? Are there any bad side effects on the fetus if I take flaxseed or fish oil? Powered by Yahoo! Answers

What about muscle building supplements such as Nitric Oxide, Fat burner, Creatine Ethyl Ester, Herbal supplements, Whey Protein? Would one of these get you disqualified for using "substances"? Powered by Yahoo! Answers

I'm an ectomorph so my body is naturally skinny and my metabolism is very high. I have muscles and a six pack but my muscles aren't big and i can't gain weight. I workout regularly and eat healthy food. How can I bypass my metabolism and be able to gain weight. I don't want to…

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How long after you stop weightlifting do u begin to lose muscle mass? And if you only trained one muscle group a week(.ie biceps) once a week would they grow or stay same size?? thanks Powered by Yahoo! Answers

Can you gain more muscle mass in you drink milk after doing weight training? Powered by Yahoo! Answers