You’re at your birthday party and they are bringing in the cake! As the song finishes you inhale deeply and blow as hard as you can to try and get all 13 candles at once. Oh no… trick candles!! You have to take another deep breath and try again. This time it’s a success and once the clapping stops, it is time to get your sugar fix. After you eat your Oreo double chocolate cake, you and all of your friends feel a jolt of energy and are very hyper. Looks like you put your pancreas into overdrive creating insulin. You decide to play a game of capture the flag to use this extra energy, but as you run to home base you step on a branch. Ouch! You jump back. As you walk back inside you feel suddenly tired. Maybe a movie would be the best way to end the party. Which body systems are involved in the above scenarios?