Here is a list of things that kills most of the population on earth. Shocking is that the useless things are the most deadliest.
Obesity- 30.000 people annually
Lightning- 10.000 people annually
Texting- 5.000 people annually
Airplanes- 1.200 people annually
Volcanoes- 850 people annually
Black friday shopping- 500 people annually
Falling out of bed- 450 people annually
Icicles- 100 people annually
Hot dogs-65 kids annually
Jellyfish- 40 people annually
Dogs- 35 people annually
Ants- 30 people annually
Vending machines- 13 people annually
Roller coasters- 6 people annually
Sharks- 5 people annually
The last is very funny because everybody is scared of sharks, but they are more innocent than obesity. So being fit will keep the sharks away.