I would love an optional ‘mental check‑in’ feature integrated into the Journal. Once a week or every two weeks, WHOOP could prompt 1–3 very simple questions (e.g., mood, stress level, feeling of having time for fun/connection). It should be toggleable and stay clearly in the wellness space, but with trends viewable next to Recovery, Sleep, Strain, and Healthspan. Right now WHOOP does a great job on physical health; this would help members see how their mental state tracks with their physiology over time.