We always look at fitness in terms of weight loss but working out is so much more than that. Having a Specific, Measurable, Actionable, Realistic Time frame can help you stay consistent.
The information is taken from the textbook-
Nigg, C.R. (2013). ACSM's Behavioral Aspects of Physical Activity
and Exercise. American Psychological Association. (2020). Publication manual of
the American Psychological Association (7th ed.).