Size up is so damn thick ... LOL ... I had to drink half a bottle, then cut it with water to be able to drink the other half.

Advice: Drink it over a half hour period. Don't try and slug it all down. Your stomach may hate you for it. LOL.

I sued to use size-up when I worked at a different gym that carried Worldwide products.

I like Rapid Recovery too.

I think American Bodybuilding makes a drink called Critical Mass that is alot of fun too.