A high school American football player would like to increase his strength and muscle mass. His average caloric intake of 2200 kcals/day has allowed him to maintain a bodyweight of 160 lb (73 kg). He would like to gain 10 lb (4.5 kg) by eating an extra 500 kcals/day and following a resistance training program. Assuming all of the weight gain is lean body mass, approximately how many weeks would it take for him to reach his desired weight?

7 weeks

Explanation:

2500÷500 = 5 days

This means it takes 5 days to gain 1 lb

5 days × 10 lbs = 50 days

50÷7 = 7.14 ≅ 7 weeks

This results in Approximately 7 weeks for him to reach his desired weight.

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