you didn’t complete your question!!
Answer:
Why are muscle and fat levels the only factors influencing flexibility impacted by personal decisions? Age, gender, and joint structure cannot be changed. ... Muscle stiffness that reduces flexibility often results from the overuse of muscle, but inactivity also weakens muscles and can make them more susceptible to injury.
It is recommended: 0.8 g for every 1 kg of body weight ( at BMR - Basal Metabolic Rate or with a little exercise ):
1 kg ≈ 2.2 pounds
180 pounds : 2.2 = 81.82 kg
81.82 · 0.8 = 65.5 ≈ 66 g
Answer:
66 g proteins are his daily needs ( remark: it is more if he is active in sports ).