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sustained elevated heartbeat is what gets you into shape. Aim for long slow runs over erratic runs with walking mixed in.
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if you are doing this as a lifestyle thing, I commend you. If you are an early riser, 5am runs are the way to go. However, find a running schedule that is sustainable. If you find yourself struggling to keep at the morning runs, adjust your schedule into one that allows you to be routine.
Best of luck
Not trying to add FUD, but have there ever been cases of Spotify banning people for using their paid license to run homebrew versions of Spotify?