Does the sudden loss of an hour of sleep raise the risk of having a heart attack?
📆 2019-03-09 11:00 / ⌛ 00:09:03
📆 2019-03-04 11:55 / ⌛ 00:12:20
📆 2019-02-22 16:30 / ⌛ 00:09:14
📆 2019-02-18 15:00 / ⌛ 00:09:10
📆 2019-02-15 18:59 / ⌛ 00:23:04