Historical clue formulations

• Common workout target — 2026-08-04
• McIntosh (or Macintosh) component — 2026-01-20
• Planks strengthen it — 2025-11-24
• Heart — 2025-08-31
• Center — 2025-03-05
• Gala throwaway — 2024-11-21
• Key — 2024-10-05
• Spot for abs or apple seeds — 2024-10-01
• Pilates target — 2023-11-13
• 17-Across + 18-Across = 19-Across — 2023-07-27
• Heart — 2022-09-16
• Planks can strengthen it — 2022-06-11
• Fitness center? — 2021-11-03
• Part of a reactor — 2021-01-11
• Word before curriculum or meltdown — 2020-08-26
• Apple throwaway — 2019-08-13
• Uneaten part of an apple — 2018-07-17
• Common ___ — 2018-05-12
• Heart — 2018-04-21
• Middle Earth? — 2017-04-29
• Muscle group targeted by Pilates — 2016-11-09
• ___ curriculum — 2016-09-28
• Mandatory courses — 2016-09-16
• Heart — 2016-06-26
• Abs and such — 2016-06-16
• Fitness center? — 2016-05-13
• Geological sample — 2016-02-21
• Heart — 2015-07-31
• Heart — 2015-05-24
• Compulsory courses — 2015-03-13
• Center — 2014-12-23
• Essence — 2014-11-07
• Part of a planet — 2014-10-29
• Abdominal and lower-back muscles, collectively — 2014-05-02
• Kind of curriculum — 2014-04-16
• Center — 2013-04-18
• Nuclear reactor part — 2012-08-14
• Part of the earth — 2012-05-24
• *Center — 2012-02-01
• Part of an apple or the earth — 2010-11-30
• Part of an apple — 2010-11-15
• Where a pear's seeds are — 2010-10-05
• Uneaten part of an apple — 2009-05-25
• Uneaten part of an apple — 2008-06-03
• Apple seeds' location — 2008-05-26
• Curriculum part — 2008-02-13
• Set of classes all students must take — 2007-05-31
• Heart — 2007-02-15
• Heart — 2006-09-09
• Very center — 2006-05-29