"Volunteers on treadmills and stair climbers used 20-60% more oxygen when walking in bursts of 10-30 seconds than covering the same distance without stopping."
"When starting from rest, a significant amount of oxygen is consumed to start walking, and we incur this cost regardless of whether we then walk for 10 or 30 seconds."
"On my walk home, the people I overtook kept overtaking me, while I kept pausing as if I'd forgotten something... you can’t help but arouse suspicion."
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