YouTube has updated its iOS app to allow for quick and easy sharing of videos directly through iMessage. Tapping the share button under a video in the YouTube app now allows the video to be sent in Messages, and the recipient can play the video directly in Messages without exiting the app. The Nike+ Run Club app also saw some improvements, adding Audio Guided Runs in both iOS and watchOS that pair specialized playlists with guidance from coaches and athletes. The app also activates a Cheers feature that encourages users to notify friends when they’re going out for a run and lets the friends send positive feedback. Perhaps most importantly, Apple Watch Series 3 users will now have access to elevation data even when running without their iPhone tethered to the watch. [via 9to5Mac]