If you feel fit enough, try to make your workout a bit more challenging today. There are a few ways you can do this. You could add an extra 5 to 10 minutes to your routine. You could add 1 more high-intensity interval. Or, for strength training exercises, you could increase the number of reps you do. These are small steps. But if you take steps like these at regular intervals, you may reach your fitness goals faster.
Make sure to talk with your doctor before starting any new fitness routine.