Chris Pratt is trying to lose his ‘Dad bod’ for a new Jurassic World movie (‘Dinos Go To College’ ?) and is documenting his fitness routine and weight loss on Instagram.

Gratuitous shot from Guardians of the Galaxy.

The handsome hunk reveals he has lost 12 lbs and he credits — wait for it — drinking good old H20. If you are going to try this make sure you’re adding electrolytes and amino acids to your water bottle so you don’t leach critical minerals from your system.