I put on 7kg on an IUD and honestly the only thing that really helped was power yoga in combination with a new diet.
If you can keep active and avoid comfort eating (definitely harder for me during the pandemic) you can definitely lose weight (even on an IUD).
The recommended 150 minutes a week of moderate exercise (or 75 minutes of more intense exercise) definitely helps. That's a couple of walks or online cardio / Zumba / HIIT classes a week.
Yoga helped me lose my weight a lot faster.
Yoga burns calories when done the right way.
If you are serious about losing weight and getting fit, you might want to implement a 60-minute power yoga and/or vinyasa flow practice at least five to six days per week.
This yoga weight loss program was easy to follow and worked for me during my pregnancy when I started gaining too much weight.
Each class is easy to follow, but is varied and enjoyable. Dynamic Sequencing means you'll always be challenged regardless of your current level.
If you want to follow my example, think about coupling your practice with a whole foods diet for optimal results.
Good luck!
Mandy