Most forms of sustained lower intensity exercise will suffice here: stationary cycling, fast walking and the stepper machine being the best forms. Running is too tough on the joints and typically will burn a greater degree more muscle than will the lower impact forms of cardio, as mentioned here. So, if you can get out of bed before 7.00am and complete 45 minutes of moderate intensity cardio three times per week you will almost certainly be on the path to permanent weight loss. Probably the best reason for adopting such an approach is the fact it is relatively easy to maintain; once waking earlier becomes routine, morning cardio will not only burn fat, guaranteed - no need for any money back promises here - but will awaken your mind and set you up perfectly for the day ahead.
But in today's unenlightened "believe everything you hear" age this most effective and proven approach, for some strange reason, does not seem to attract much interest. This is no more obvious when one witnesses the "technological" revolution that is happening within the fitness industry, where a newer even more ridiculous gadget compared to the one that preceded it promises to build you the body of your dreams, with little effort on your part, "in 30 days or your money back"; where a machine that does most of the work for you is touted as a suitable replacement for actually applying a modicum of effort. https://www.youtube.com/watch?v=mDHGaU_jGrQ