The answer would be headaches I hope this would help and hope it’s the right one for you
Children in low income neighborhoods can't afford balls, and such things to play with, while people in average neighborhoods can.
Personally i think that being flexible doesn't reduce your risk of injury. you can still injure yourself even if you're flexible
For most muscle activities it usually lasts at least 90 seconds in duration for you to solely rely with lactic acid.