Many wearable devices you can buy today can keep track of your activities and help you stay on your workout program. You also want to stay visible at night for your own safety. If you are a DIYer, you could always make your own Motion Activated Running Band. This video by Adafruit shows how you can make your own flexible motion activated LED arm/wrist band. It keeps you visible at night and looks fun. All the parts you require are available on Adafruit.
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Motion-Activated LED Wristband
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