Rekna

Lately I have been having a very strange appetite. I find myself eating my normal meals (2 a day with an occasional breakfast). My meals are typically good in size like a 16 oz steak and baked potato. My problem is for the last few weeks about 45 minutes after eating i'm hungry again. I feel like i'm in a perpetual state of hunger. This reminds me of going through growth spurts. But here is the problem with that, i'm almost 24 years old so it can't be a growth spurt. I'm wondering if i'm not getting enough of the right food groups. I tend to eat lots of protien. Though I always have some carbs with it also. I'm wondering if anyone else has any idea why I am hungry so soon after eating. I have a slim build but i'm worried that if I keep eating like I am that will change quickly.