When I first got my Apple Watch, I’d been using a FitBit for years and was very proud of my daily 10,000 steps. Immediately, however, I discovered that despite much walking, the green ring on my fancy new Apple Watch barely moved. Not only was I not hitting that target of 30 minutes of elevated heart rate a day, I realized I hadn’t even been aiming for that goal in all those years of wearing a FitBit.

So I made some changes, and now I spend time hiking up hills, riding my bike, and (until a few months ago) going to the gym to fill that elusive green ring. Even being stuck home, I’m finding ways to push myself and fill that green ring most days. I read some affirmation for this exercise this morning from cardiologist Brian Lima, who explains that when it comes to those Apple Watch rings, the green activity ring is one ring to rule them all.