Research shows that apple cider vinegar can have numerous health benefits, as long as you use it correctly. One study suggested that two tablespoons of apple cider vinegar before bed with a small snack can help lower blood sugar levels in the morning. Another study found that it helps to improve blood glucose levels in people with pre-diabetes and type 2 diabetes. If you want to give apple cider vinegar a go, here are some tips for how to best incorporate it into your diet.