Why do we have to contract our throat when swallowing water? I mean it could just slide right down to our tummies.
In: 205
Because evolution.
Our 4 legged ancestors reached their heads down and has to work against gravity. When evolved later to a monkey form, still squat down and bend over putting lips to water. For 100,000 years modern humans also squatted down leaned over and put lips to water – although sometimes they would scoop it up with one hand or two.
Drink from a drinking fountain and it’s still the same.
Drinking by having a container in hand and dump it down the gullet is pretty modern
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