Historical clue formulations

• Hospital concern — 2026-03-17
• Class that might cause some high schoolers to blush — 2025-09-28
• Physical well-being — 2020-03-23
• It can be improved by 39-Across — 2003-08-19
• The first "H" of H.H.S. — 1997-06-23
• Hygienist's concern — 1995-07-02