"You know you're getting old when you stoop to tie your shoelaces and wonder what else you could do while you're down there" - George Burns.
The physical properties of nylon and leather that make them good materials for shoelaces is that they are both durable and flexable
No-one knows exactly! Like shoes, shoelaces have been around for thousands of years, long before either names or inventors were ever recorded. Having started as basic string or leather thongs with which primitive humans bound their foot coverings, they would have gradually evolved into the shoelaces that we know today, with no individual ever credited with their "invention".It is widely mis-reported that shoelaces were invented by Harvey Kennedy on 27th March 1790. This date is centuries after shoelaces were in common use and is clearly NOT correct. Perhaps he patented a particular type of shoelace, but he did not "invent shoelaces".
His shoelaces looked like spaghetti -- all in a tangle.
shoelaces
There is no specific data on the number of people who die from tripping on their shoelaces. Tripping on shoelaces can result in minor injuries like sprains or bruises, but fatalities from this cause are rare.
The Orbicularis oris muscle. It is sometimes known as the kissing muscle because it is used to pucker the lips.
He/she would use flexibility training to increase the flex a muscle can give. This would protect against cramps and strains in extreme position, because the muscle and ligaments would be use to the awkward and sometimes excessive strain.
a tie knot
Q: can i use tie boxing on bullies? A: no tie boxing is not the right way to deal with it
I had to disentangle myself from my own shoelaces. Sometimes the strands are difficult to disentangle.
Yes all is good here.