Question

the old days of fitness training involved a stopwatch and a coach or trainer, blowing a whistle at you, perhaps with a bit of yelling for “encouragement.” you’d know your body was getting a workout when your muscles ached and you were out of breath. today’s fitness training takes full advantage of technological advancements, including wrist heart rate monitors.

Answer 1

thanks for the information do u want any ans

Answer 2

so what do you want tell basicaly that older process are simply waiste of time and effort or they does not give proper result