Heres my handy list of fitness applications for android you never knew you needed:

• CardioTrainer by WorkSmart Labs Inc.

Just install CardioTrainer on your Android phone, start it, get outside and go! CardioTrainer will use GPS to show your real-time position on a map, and also save your exact route, so you can review it later in your Track History.

• Body Fat Calculator by FullQuieting

Determine your body fat percentage and body mass index (BMI) with a few convenient measurements. It is a useful supplement to those interested in monitoring their general health and fitness, and those involved in sports. Includes instructions and diagnostics.

• Calorie Counter by FatSecret

A simple tool to find all the Calorie and Nutrition Facts for the foods you eat.

• HIIT interval training timer by Giorgio Regni

High Intensity Interval Training is a sport timer for interval workouts. It can be used for tabata style HIIT sessions, cycling, running, sprinting, weightlifting, aerobics, abs and fat loss.

• Punch-O-Meter by Alex Pisarev

This is a simple application that allows you to measure the speed (actually, acceleration) of your punch. The faster the punch - the better score you get!

Aki created a virtual reality cycling environment using a Vuzix VR920, Bike Sensor and an Arduino to cycle through Google Street View. So instead having to look around a dull garage he can instead, look around Hollywood, LA or even Australia.

More information here.