 [ Symptoms ] can cocaine cause elevation in lfts [ Disease ] assuming you have been cleared by your primary health care provider to exercise you should be ok to simply eat a well balanced diet that includes fresh vegetables and fruits lean protein whole grains and healthy fats like olive oil be sure to stay well hydrated by drinking plenty of water too also remember that it takes time to build up to high intensity cardio training no beginning exerciser immediately has the stamina to run a marathon for some people 10 minutes of cardio is enough to begin with you will gradually work up to longer and more intense sessions i suggest you visit the webmd fitness & exercise community and support group where you can ask questions of others and get support on maintaining a healthy lifestyle take care