Hard Labor

I'm 23 years old and I am in the worst shape of my life. I have physical issues that 40 and 50 year olds have I'm sore and achey after only 4 hours at work, not to mention I am significantly over weight. But I'm finally planning to do something about it I wanna work out more, and eat better, I should be able to feel like I'm 21 and not 30. I plan to reach my goal weight by summer 2013. Wish me luck.