Generally when people talk about gaining lean muscle mass the talks come down to single topic of carbohydrates. This is because carbs are protein sparing in nature so they help in bridging the gap between bodybuilder and his goals. They cause our body to release insulin, which in turn pulls available nutrients from blood and delivers them to muscles. When those nutrients enter blood, the amino acid available in them is used for muscle recovery while extra calories are stored as fat. However, eating too much carbs everyday can reversely harm the body instead of building lean muscle mass.

So now you may be wondering that how much carbs should a person eat everyday? Well, in next few points I'll provide answer to this question:
  1. How much carbs should you eat everyday: Carbohydrates are stored in our body in the form of Glycogen. Keep in mind that our body can store only 400 grams of glycogen at a time. So before you start "bulking up" carbs in your body next time by eating chips, breads, pasta and rice keep this fact in mind.

  2. Time of eating carbs: Second thing to consider about your carbohydrates consumption is timing. For maximizing the effect of carbohydrates you should consume them in the morning as soon as you wake up because at that time cortisol levels in your body are elevated. Second best time for taking them is after exercising. High glycemic carbs taken after exercise cause the insulin levels to spike which ultimately pulls more amino acids from blood and delivers them to muscle tissue for growth.

  3. Do you think that carbs can make you fat? Think again: After the "low-fat" diet revolution of US many people are trying to eliminate carbs from their diet because they think that carbs may make them fat. But this is nothing instead of crap. As long as you're consuming cabs within limits, they'll fuel the growth of your body. On the other hand, eliminating them completely from your diet may lead to severe health hazards. So consume them in limited quantity.
So at last I would like to say that if you're a hard gainer then you can increase your calorie intake by adding more fats to your diet. Remember that fat is 9 calories per gram while carbs and proteins include 4 calories per gram. On the other hand, if you're an easy gainer and your goal is muscle mass then you should include more carbs and proteins in your diet.