40s+
0 s
BOLT Score
Body Oxygen Level Test
1
Breathe in normally through your nose
2
Breathe out normally — don't force it
3
Pinch your nose and tap Start
4
Tap Stop at the first urge to breathe — not maximum hold
0.0
seconds
Stop at the first natural urge to breathe.
Don't push through — that defeats the test.
seconds
Where to start
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