Training — mark a workout complete

The Mark session complete button on your program now does what it says:

• Tapping it records the session to your workout history (it used to only tick the button visually, without saving).
• Your coach sees the completion, so adherence is based on real activity.
• After logging, you land on your progress history with the session marked done.

This is the first step of in-workout logging — per-set reps, weight, and RPE come next.