How Fast Should I Run On A Treadmill

treadmill
An exercise machine, typically with a continuous belt, that allows one to walk or run in place
A job or situation that is tiring, boring, or unpleasant and from which it is hard to escape
a job involving drudgery and confinement
an exercise device consisting of an endless belt on which a person can walk or jog without changing place
a mill that is powered by men or animals walking on a circular belt or climbing steps
A device formerly used for driving machinery, consisting of a large wheel with steps fitted into its inner surface. It was turned by the weight of people or animals treading the steps

should i
"Should I Stay or Should I Go" is a song by the English punk rock band The Clash, from their album Combat Rock. It was written in 1981 and featured Mick Jones on lead vocals. It became the band's only number-one single, a decade after it was originally released.

run on
continue uninterrupted; "The disease will run on unchecked"; "The party kept going until 4 A.M."
(of a sentence) Containing two or more independent clauses that are not separated by a colon or semicolon
talk or narrate at length
Denoting a line of verse in which a sentence is continued without a pause beyond the end of a line, couplet, or stanza
(verse) without a rhetorical pause between lines

fast
abstaining from food
Abstain from all or some kinds of food or drink, esp. as a religious observance
acting or moving or capable of acting or moving quickly; "fast film"; "on the fast track in school"; "set a fast pace"; "a fast car"
abstain from certain foods, as for religious or medical reasons; "Catholics sometimes fast during Lent"