Calories?: Not sure the reasoning for gaining weight in three weeks, but increasing calories (protein and carbs) should do it. You need to stay hydrated though - that is extremely important.
Answered 7/3/2013
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Go Slow!!: 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, lean meats & poultry.
Answered 12/26/2018
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