Fitness Friday: 16-minute cardio and ab workout Published: June 8, 2020, 12:39 pmTags: Fitness Friday, Fitness, Workout, Rhonda Walker, Fit, Exercise, Work Out, Tips, Cardio, AbsRhonda Walker has a quick workout you should try for cardio and abs. For more Fitness Friday, go here. Copyright 2020 by WDIV ClickOnDetroit - All rights reserved.