Question

Chair how can it be useful​

Answer 1

Answer:

what ??? chair is used for sitting !!!

Answer 2

Answer:

well... Nice question :)

chair is useful to sustain a proper posture for sitting (even though you can sit anywhere but a chair is speciallydesigned for purpose.)... Different designs and materials of chairs give greater or lesser degree of comfort and posture positions. Some may be good for your muscle and bone health while some wrong choices may actually cause problems!