How to gain 40 pounds within 6 to 12 months?

Calories = weight: 5000 calories in food equals one pound of weight gain. Normal daily activity burns about 1500 calories per day. Simple math for net weight gain depending on how many calories taken in. Muscle mass is healthy and fat gain is not. Do more resistive than cardiovascular exercise to build muscles. Eat protein, not fat calories to remain healthy in this endeavor.

Really steep curve: for weight gain!! Eat healthy foods high in calories. Eat 6 meals /day. Work on strength training to build large muscle groups. Work out w heavier weights w fewer repetitions. Sleep at least 8 - 9 hrs/night. Hydrate well w water. Foods to help w weight gain: almonds, cashews, pecans, sunflower seeds, flax seeds, walnuts, hummus, avocados, granola, trail mix, dried fruits, protein shakes & bars,