Just let the time complete another 30/10 set before beginning the next round. Bat wings are more common in older adults and people who are overweight. As the body ages, muscle tone diminishes, but many exercises can restore this tone. After you complete all five exercises you can take a 40 second rest before starting it all over again. Go for 3-5 rounds total and I’d recommend doing this workout no more than 2-3 times per week.