The best replacement for routine is ritual.

The best alternatives to routine are rated as following:
★★★★★  ritual
★★★★  habit
★★★  full body
★★★  schedule
★★★  non routine
★★★  full body workout
★★★  demand feeding
★★  diagnostic mammogram
★★  diagnostic
★★  ordinary
★★  baby led
★  procedure
★  demand
★  split
  total body workout
  on demand
  habitual
  split routine
  full body routine
  total body
  stat
  upper lower

Your alternative for routine is not listed? Suggest!
Speaking about routine, one probably shouldn't forget about weights.

Other search terms related to routine and their ratings are:
★★★★★ weights
★★ baby and toddler
You have in mind a companion for routine and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of routine in all years. Click on graph for more.
routine
ritual
habit