Want to exercise more but have no motivation? The lazy jar might be exactly what you need. This new app pairs with your FitBit and charges you cash each time you miss your weekly workout goals and, unlike similar apps, theres no way to get your money back. You start with a deposit and a 6 month agreement where you set your goals and how much money you are willing to wager to inspire your trips to the gym. Lazy Jar donates 80% of your loss to charity, and uses 20% to keep the app up and running.