My Fitness Pay is a great "Food log" which was told I should use 25 years ago when I first started noticing the "behind the desk" effect. I still play sports constantly but the weight gain was huge.
I lost 50+ lbs on MyfitnessPal. I didn't need to eat the crappy "whey" and other tasteless stuff. I chose to eat a bowl of cereal in the morning, low cal lunch (100-200 cals from a frozen quick meal) and I would eat a big dinner. Big dinner? Steak and Potato with a Salad at Outback. All that under the calorie limit to sit sedentary and lose 1.5 lbs a week.
When I stopped Myfitnesspal, I gained weight. Its a simple equation: Get a real Food Diary and use it.
Now, to get that my fitness pal back on track.
Oh, and avoid Diet Drinks. This guy mentions he ate high protein to make sure he burned FAT but diet drinks just make you crave food. I really think high protein foods = less sugar = less cravings. Thus the steaks are much better than burgers effect for losing weight. They stay in you longer and are half the calories.