Now more than ever, it's important to do all you can to strengthen your immune system. You might be lured into thinking herbs and supplements are the best protection against illnesses. But really, making these five simple lifestyle changes can do much more to support a healthy immune system. Get Good Sleep Regular, restful sleep recharges and strengthens your immune system. Sleep researchers agree you need at least seven hours of sleep to achieve the immune enhancing benefits. Interestingly,