Sleep not only impairs memory and retention, but can also impact your physical health drastically.
Matt Walker explains this in his TedX talk:
Now, in the spring, when we lose one hour of sleep (due to daylight savings), we see a subsequent 24-percent increase in heart attacks that following day. In the autumn, when we gain an hour of sleep, we see a 21-percent reduction in heart attacks.
Losing just a single hour of sleep can place significant strain on your cardiovascular functions. Matt has also performed a number of other experiments that highlighted the following issues arising from lack of sleep:
- Contributes to decline of memory leading to Alzheimers.
- Increased rate of car accidents, and suicide.
- Immense drop in immune system strength (upto 70 percent)
Matt rounds off his talk with a harrowing conclusion: The shorter your sleep, the shorter your life.