What are the most effective diets and exercise routines?

[Anonymous]

There are many people on this site that focus a lot on fitness and health and I'd appreciate their help. In the past 2-3 months I've gained almost 20 pounds.

[AnonRom]

Eat fewer calories burn more calories.

Specifically don't just do cardio (do that too but lift weights gaining muscle increases metabolic rate)
Eat healthy don't starve yourself but honestly I think we all know what foods are healthy and which aren't. You can check the average calorie intake for stable weight for your weight height etc and cut 100-200 calories from that to drop weight.

[Xfitchick]

Did you gain muscle or fat? Have that sorted out first. You should not focuss on weight but on a healthy muscle/fat ratio