Apple confirmed that they are creating a fitness workout service called Fitness+, a workout video service powered by the Watch by choosing the video on iPhone, iPad or Apple Tv and this then automatically start the correct workout on the watch.
The fitness program includes Yoga, cycling, dance, treadmill, strength, core, hit, rowing and cool down, there will be new workouts each week. Fitness+ costs $9.99 a month or $79.99 a year and is part of Family sharing. You can get 3 months free with the purchase of a new Apple Watch. You can also include it in the new One service for $29.99 a month.