My arms are already showing gorgeous results from the workouts. My legs are always delinquent. About how long do you think it’ll take to show results there?

SO happy to hear you love the results in your arms!!! The changes in lower body can lag by several weeks. By doing the HIIT, especially with the explosive moves of the plyos and the sprints, you will see results much quicker than if you were trying to change your body composition without this type of training.