A training record should distinguish a planned rest day, a missed session and an unrecorded workout.
Keep the calendar honest
A blank day does not explain whether you rested or forgot to log a session. Keep the distinction in your own schedule or notes when it matters to your review.
Avoid chasing a streak
Recording more sessions does not by itself establish better training. A log should describe the schedule you follow, including rest, rather than pressure you to fill every day.
Record useful context
A short note about a changed schedule or unusual fatigue may help explain a session. It does not diagnose overtraining or determine how long you need to recover.
Separate records from advice
Use an appropriate training plan or qualified guidance for recovery decisions. Weights records activity; it does not prescribe rest intervals or assess readiness from an empty calendar day.