Aimed at losing weight? Spare your muscles - step away from pure cardio in favor of combined aerobic-anaerobic training. The exhausting high-repetition training regime and energy-consuming cardio sessions of periodic intensity will not give fat any chance.
If you have sat at the desk and have not practiced for a long time, try to gradually regain your former power and physique. Simple exercises, without barbells, dumbbells and machines. An interesting training scheme, which will not let you get bored. Training of average intensity for 10-30 minutes.