Will i lose all my data on my iPhone 5 if i switch to the new iOS7 Beta?

I just saw that a lot of people are using the new iOS7 Beta & i really like it & want to switch to it so my question is: Can i switch to the new Beta without losing all my data on my Phone? (sorry for my english)

If you're just changing the OS, you shouldn't lose your data unless there's a glitch while the update is happening.

At this point with the public release days away, why go through all the hassle to run a beta? Just wait & you'd get in on it free with no worry of potentially ending up with a bricked device.

Yes, as long as you make a backup first. Also, you need to register your device's UDID with a developer account through a site like http://www.udid.in/.It's $5, and then you don't need to worry about Apple disabling your device for running unreleased software.