I've been using it for quite awhile - most often right after a weightlifting session. I'll make it a full meal though, usually using NF milk, peanut butter, banana and a scoop of protein. With all of that, it definitely fills me up.

If I know I won't be home right after a workout, I'll bring a scoop with me to the gym and just add water to it before I head out.

It's really good for muscle recovery.

Oh, I always add it to my oatmeal, too - with freeze dried strawberries. YUM!!