"Teen Mom's" Tyler Baltierra is all about a healthy lifestyle. According to Access Hollywood, the reality tv star took to Instagram on Saturday to show off his newly toned physique. He wrote: "Hard work is paying off! It's been 6 months since completely changing my eating habits, I dropped 40lbs & now it's time to cut it all up with these workouts, BOOM!," The 26-year-old has been sharing about his weight loss, and discussed nutrition back in January on Twitter.