Why does the first month feel like nothing is happening?
Because it is not fat-loss time yet. Your first weeks back are repair: tissue tolerance, sleep, and relearning how to move without something complaining. Skip that stage and you buy an injury in week four instead of a result in week ten.
Can I start with sprints or hard intervals?
No. If you have not trained in years, do about eight weeks of easier work first, then add intervals. Going all-out on your feet after a decade of sitting is how men tear calves and Achilles tendons.
What should the first few weeks actually look like?
Walking, if you are able, building daily activity gradually. Add something you enjoy, a class, cycling, gym training, rather than jumping straight into a brutal routine. Stay consistent and work within what your body can handle right now.
How do I know it is working if the scale is not moving?
Watch how you function and feel, not just the number. Real results have looked like 28 pounds down over 75 days for one client, and visible muscle gained with only modest weight loss for another. The timeline and the shape of the result vary by person.
Coaching, not medical advice. Read the health notice.