Damaging Effect #1 - Sleep Loss Dumbs You Down
Sleep plays a crucial role in thinking and learning. When you aren’t sleeping well these cognitive processes suffer. First, it impairs attention, alertness, concentration, reasoning, and problem solving. This makes it harder to learn new things. 
Second, during the night, various sleep cycles play a role in “consolidating” and storing your memories. If you don’t get enough sleep, it’s almost impossible to remember what you learned or even what you did the day before.
Damaging Effect #2 - It Kills Your Sex Drive
If your sex life is lagging, it could be your lack of sleep. 
Researchers followed nearly 4,000 men and women in their early- to mid-60s for a year. What they found is that poor sleep was associated with erectile dysfunction for men and arousal problems and orgasm difficulty for women.
Damaging Effect #3 - It Ages Your Skin
Most people have experienced the pale skin and puffy eyes that come along with not getting enough sleep. But it turns out that chronic sleep loss can lead to accelerated skin aging, fine lines, and dark circles. 
When you don’t get enough sleep, your body releases more of the stress hormones which can break down skin collagen, the protein that keeps skin smooth and elastic.
Sleep loss also interferes with our release of growth hormone, a key hormone that helps with repair tissue, increases muscle mass, thickens our skin and strengthens our bones.
And here’s the culprit behind all of it...