Running out of RAM?

[BulletInAction2]

http://gyazo.com/0a97941bc60d78ace48828dd39dbc523

So should I be concerned? The available usage bounces up and down. Even though it says I have 8.0 GB. Is everything okay?

 

[Danbuscus25]

you are 100% fine.

 

[ThatVietGuy]

It's fine.

 

[qwertyDS]

I see no problem in this graph it always bounces since every little program you close your ram frees up