Is it okay to open a slow-cooker (crockpot) while it's cooking?

[Phantomize]

I'm afraid the meat might be drying out a little, so I want to mix it in with the rest of the ingredients. If I open the slow-cooker, stir everything around then put the lid back on, will it be okay, or will I let all the steam out or whatnot? Thanks.

 

[Mommy of 2]

it's ok to open it!

 

[The soup man]

itll be fine, it dont affect the taste or quality of your food at all