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Is this normal?
So my normal o2 stat at rest is between 90 and 93. I don’t exercise much aside from riding my horse which isn’t much cardio. Lately I’ve been doing ab workout like crunches and I get out of breath so easy. My o2 stat after 30 crunches (less than two minutes) was 83. It took probably 5 minutes or less to go back up to 90 but it was kind of discouraging because ab workouts aren’t that straining on the heart. What do you think?
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