Tough to figure out the exact way to go about it!
I assume he is pretty young and just starting his career, right? I actually had a similar experience with my weight gain.....played football in college as well as worked out and could never gain any bulk....always cut up lean muscle.
After I graduated and started a desk job my eating habits were mostly based on proteins and tons of carbs like usual in which I overloaded to try and keep my weight from decreasing. Over several years without myself really knowing I put on a considerable amount of weight (Fat belly as well as my muscles bulked up all of a sudden.....my body totally changed).
Not sure if my metabolism changed or the fact that I had a desk job with no more sports and a girlfriend who I lived with, also fat & overweight who was a great cook.
So, maybe just try cooking him tons of starch and carbohydrates for dinner and always eat with him and he will probably start getting a pretty fat belly. Not sure if you are into gaining weight yourself but during the time I got fat (which I have always been an FA and into weight gain on women) my girlfriend gained a lot with me at the same time and it was such a great mutual gaining experience.
Let me know some more details maybe I can shed some mor input to your question.
I assume he is pretty young and just starting his career, right? I actually had a similar experience with my weight gain.....played football in college as well as worked out and could never gain any bulk....always cut up lean muscle.
After I graduated and started a desk job my eating habits were mostly based on proteins and tons of carbs like usual in which I overloaded to try and keep my weight from decreasing. Over several years without myself really knowing I put on a considerable amount of weight (Fat belly as well as my muscles bulked up all of a sudden.....my body totally changed).
Not sure if my metabolism changed or the fact that I had a desk job with no more sports and a girlfriend who I lived with, also fat & overweight who was a great cook.
So, maybe just try cooking him tons of starch and carbohydrates for dinner and always eat with him and he will probably start getting a pretty fat belly. Not sure if you are into gaining weight yourself but during the time I got fat (which I have always been an FA and into weight gain on women) my girlfriend gained a lot with me at the same time and it was such a great mutual gaining experience.
Let me know some more details maybe I can shed some mor input to your question.
12 years