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@KHetou: Interesting:repeated suction causes cyclic ⬇️-⬆️ in intracav pressure (as a sort of pump) ⏩ METs. See https://t.co/lAwdB1Lb8W ➡️RT
@KHetou: Interesting:repeated suction causes cyclic ⬇️-⬆️ in intracav pressure (as a sort of pump) ⏩ METs. See https://t.co/lAwdB1Lb8W ➡️RT