How can you quickly heal a rectus and oblique muscle strain? how long does it take to heal?

Depends: There is no way to accelerate the healing. Depending on the severity of injury it may take a couple of days to a couple of weeks. Wish you good health! - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex, if you have sex.