x-flow

A Spotify playlist generator to maximize the cardiovascular efficiency of your run

I am 18 years old 19 years old 20 years old 21 years old 22 years old 23 years old 24 years old 25 years old 26 years old 27 years old 28 years old 29 years old 30 years old 31 years old 32 years old 33 years old 34 years old 35 years old 36 years old 37 years old 38 years old 39 years old 40 years old 41 years old 42 years old 43 years old 44 years old 45 years old 46 years old 47 years old 48 years old 49 years old 50 years old 51 years old 52 years old 53 years old 54 years old 55 years old 56 years old 57 years old 58 years old 59 years old 60 years old 61 years old 62 years old 63 years old 64 years old 65 years old 66 years old 67 years old 68 years old 69 years old 70 years old 71 years old 72 years old 73 years old 74 years old and want to run 1

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in 0 hr 1 hr 2 hr 3 hr 0 mins. 1 mins. 2 mins. 3 mins. 4 mins. 5 mins. 6 mins. 7 mins. 8 mins. 9 mins. 10 mins. 11 mins. 12 mins. 13 mins. 14 mins. 15 mins. 16 mins. 17 mins. 18 mins. 19 mins. 20 mins. 21 mins. 22 mins. 23 mins. 24 mins. 25 mins. 26 mins. 27 mins. 28 mins. 29 mins. 30 mins. 31 mins. 32 mins. 33 mins. 34 mins. 35 mins. 36 mins. 37 mins. 38 mins. 39 mins. 40 mins. 41 mins. 42 mins. 43 mins. 44 mins. 45 mins. 46 mins. 47 mins. 48 mins. 49 mins. 50 mins. 51 mins. 52 mins. 53 mins. 54 mins. 55 mins. 56 mins. 57 mins. 58 mins. 59 mins. and I like running to acoustic afrobeat alt-rock alternative ambient anime black-metal bluegrass blues bossanova brazil breakbeat british cantopop chicago-house children chill classical club comedy country dance dancehall death-metal deep-house detroit-techno disco disney drum-and-bass dub dubstep edm electro electronic emo folk forro french funk garage german gospel goth grindcore groove grunge guitar happy hard-rock hardcore hardstyle heavy-metal hip-hop holidays honky-tonk house idm indian indie indie-pop industrial iranian j-dance j-idol j-pop j-rock jazz k-pop kids latin latino malay mandopop metal metal-misc metalcore minimal-techno movies mpb new-age new-release opera pagode party philippines-opm piano pop pop-film post-dubstep power-pop progressive-house psych-rock punk punk-rock r-n-b rainy-day reggae reggaeton road-trip rock rock-n-roll rockabilly romance sad salsa samba sertanejo show-tunes singer-songwriter ska sleep songwriter soul soundtracks spanish study summer swedish synth-pop tango techno trance trip-hop turkish work-out world-music

Generate Spotify Playlist

This will require you to login securely to your Spotify account. If you want to use the app reach out to amiyo (dot) chatterjee (at) gmail (dot) com

How x-flow works

Research shows that listening to music at a particular tempo (beats per minute or BPM) while running can have the effect of synchronizing your heart rate to the songs tempo.

An optimized run takes your heart rate to about 80% of your max heart rate. Max rate is an age dependent number and a good rule of thumb is max heart rate = 220 - age in years.

x-flow asks for your age, distance you want to run and the time you want to finish this distance in. It divides the run into 3 stages: warm-up, the middle slog and the strong finish.

• For the warm-up phase it chooses songs based on your preference of genres and identifies songs at whose BPM is 50% of your max heart rate.
• It gradually increases the intensity so that songs have an average of 70% of your max heart rate during the middle slog of your run.
• Finally, you will experience a strong finish with songs reaching BPMs of 80% of you max heart rate.