Agreed. I lost about 10 kg back to ~60 kg of the teen myself (now I'm 50). It took quite a lot of exercise but that was the easy part. The most difficult part was avoiding eating off hours apart from avoiding alcohol and sugar altogether. Now. Maintenance is surely easier.

On a side note, I keep exercising at least 2-3 hours per week and honestly I feel physically much better than I used to feel in my 30s.