Mondays Can Be Dangerous for Your Health
The most common time for a heart attack to occur is Monday morning. The reason? Many workers have a significant increase in blood pressure when they go back to the office after the weekend. The stress of commuting could also be a factor.
About the Heart: The heart is the body's engine room, responsible for pumping life-sustaining blood via a 60,000-mile-long (97,000-kilometer-long) network of vessels. The organ works ceaselessly, beating 100,000 times a day, 40 million times a year—in total clocking up three billion heartbeats over an average lifetime.
It keeps the body freshly supplied with oxygen and nutrients, while clearing away harmful waste matter.
The fetal heart evolves through several different stages inside the womb, first resembling a fish's heart, then a frog's, which has two chambers, then a snake's, with three, before finally adopting the four-chambered structure of the human heart.