Can I downgrade my iphone os?

Is there a way to downgrade my iphone 4 from ios 7 to ios 6. I'm pretty sure you guys know why if you have an iphone 4 ios 7 is really laggy and fustrated And with all iPhones on ios 7 one of the things that irritates me is when you unlock your phone or open an app you can't really use it that second. You have to like wait cause even if you move your hand the screen will not scroll. Basically the apps aren't ready for use when you open them. It's like a delay and it's very irritating. I want to be able to unlock my phone and start swiping pages. Can I downgrade?

Yes, you actually can but you can only do it if you saved your shsh blobs from iOS 6. I didn't sadly so I'm also stuck on iOS 7 on an iPhone 4. Its terrible. But unless you saved the blobs you can't downgrade. Sorry.

I found this link it might help

http://www.digitaltrends.com/mobile/how-to-downgrade-to-ios-6/