Exercising the same routine

[Abner1]

Hi. I've heard that if you exercise the same routine all the time, eventually it will quit working for you. Is this correct? How long can you stick with a routine before it quits working for you?
Does this include walking and getting on the stationary bike as well?
Does this include weight training?

Please Help!

 

[JeremyRice]

i try switching it up every week

 

[hajni]

I don't know if it quits working after a while , I always get bored first.
When I feel bored with an exercise I try to mix it up a little bit and do some things differently.