Vital Slim Keto There are those who say that traditional cardio (steady state) is useless. Others, that the HIIT is the only thing that works. Both sides are right. But it depends: Are you two weeks away from a show? Then it may not be the best time to sprint 100 yards uphill. Are you getting ready for a soccer camp with training twice a day? Then HIIT may be a good choice. Try to walk for 45 minutes, because they are relaxing for both the body and the mind and do not hurt your joints. Or do intervals because they represent less time devoted to conditioning and you would get the same benefits. Whatever you decide, make sure that you will enjoy it, and if not, at least make sure that you will not spend too much time and that it serves you for the goals you want to achieve.