Members Active on Consecutive Days

Return members who worked out on two consecutive calendar days at least once.

Table schema

Workouts(id INT PRIMARY KEY, member VARCHAR(10), workout_date DATE, minutes INT, calories INT)

Sample data

id | member | workout_date | minutes | calories
1 | Ann | 2026-09-01 | 30 | 250
2 | Ann | 2026-09-02 | 45 | 400
3 | Ann | 2026-09-04 | 60 | 500
4 | Bob | 2026-09-01 | 20 | 150
5 | Bob | 2026-09-03 | 25 | 200
6 | Cy | 2026-09-02 | 90 | 700