8. Carnitine

It has been established over the years that carnitine possesses at burning properties. Recent studies have also discovered its various other benefits. Some of them include a rise in testosterone levels, improved muscle recovery resulting from increased blood flow, and its ability to stop the loss of muscle when there is inactivity. A study conducted in 2001 showed that 2g of carnitine daily for a period of 6 months will increase work capacity in athletes by 35%. Carnitine works hand-in-hand with insulin for effective results, so you can take it with Omega 3, carbs or any other nutrient that is high in insulin.