Other seafood sources for high iron and B12 include oysters, trout, salmon and haddock. For people over 50 who must limit saturated fat and cholesterol, seafood sources make superior choices to meats for building up your blood.
More specifically, sedentary men ages 19 to 30 need 2,400 to 2,600 calories; 31- to 50-year-old men require 2,200 to 2,400 calories; and sedentary men over the age of 50 need 2,000 to 2,200 calories each day to maintain a healthy body weight.
Let me break that downâ¦. Men: 250 additional calories per day. For example, if you are a guy with a daily calorie maintenance level of 2000 calories, you should now eat about 2250 calories per day to build muscle. Whatever your maintenance level is, just be 250 or so calories above it each day.