Sip-timer that can run in background in iPhone?

I need help remembering to constantly sip water.

I've found an ok sip/bite timer app, but it doesn't run in the background. I'd (NextBite) like to find an iPhone app that does run in the background so I can still use my phone for other things and get reminders to sip.

Ideas?

I just sip every few minutes out of habit and before I know it  my water is in. Good luck. Let me know if you find anything.  

Waterlogged works well and you can adjust the reminders very easily

Where is the Waterlogged site.  I would like to find it and check it out.

 

This is pretty cool    

Thanks for sharing!

I carry two 20 ounce cups filled with ice tea or iced water, lemons and ice every morning to work and fill both a second time through out the day and always finish at least 80 ounces during my 8 hours of work.  I keep filling the cups after I leave and always have them with me, even now one cup is in bed with me.  I have taught myself to constantly take sips all day by this method and I have been at goal for years.