EXERCISE: Stationary Bike
TIME: 20 min
SPEED: ~13 mph
DISTANCE: 4.30 miles
CALORIES: 130 kcal
PEAK HR: 228 bpm

Didn't plan on going over 12 mph, but my natural pace seems to have increased into the 13 to 13.5 mph range, so I went with it. Over the entire 20 minutes I averaged 12.9 mph. It pushed my, but no excessively. My heart rate did peak at 228 bpm, but came down below 200 bpm within about 20 seconds of lowering the resistance level, so that doesn't concern me too much. I haven't decided if I will set the target speed to 13 mph or not.