By Jennipher Walters,
March 22, 2011
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For those who love their cellphones, today is an exciting day. The opening of the Amazon Appstore for Android! Not only is the new store giving away a free paid app every day, but it's also giving you the chance to return any app in the store within 15 minutes - so if you download a calorie counter that doesn't perform as well as you thought it would, poof! Money back. We recently scoured the new app store's health and fitness section to find three apps worth trying. Here are our top picks.

3 Best Fitness Apps from the New Amazon App Store

Calorie Counter and Diet Tracker by MyFitnessPal. This free app allows you to track how many calories you consume and how many calories you burn through exercise. With a comprehensive database of more than 590,000 foods and growing, you can even scan barcodes, save your favorites, add multiple foods, save entire meals at once, create your own custom foods and exercises, track major nutrients, keep progress reports, view personal goals and more. It's the perfect techie weight-loss buddy!

Authentic Yoga with Deepak Chopra and Tara Stiles. Take your yoga practice wherever your day takes you with this app. With video and photos of how to do poses correctly, you can create your own yoga exercise routine, listen and watch narrations by Deepak Chopra or work through 13 different routines with varying difficulty levels. Om!

C25K Pro. If you'd like to go from couch potato to runner, this is your app. With a full 9-week plan to get you to completing your first 5K, this app allows you to play your own music with audible signals to switch from running to walking and back, voice prompts to keep you on track and a progress indicator. It's a great beginner's tool to running!