Here’s the shortcut I wrote:
https://www.icloud.com/shortcuts/68d796ffedb740f7a7949b2f21787a2c
I do a 1-minute meditation with Apple Meditation on my watch first thing after waking, and then immediately run the shortcut from my watch.
The shortcut picks up the latest values that Meditation wrote to Health, saves them in notes, and then sends them to Intervals.