| 2026-08-29 | Stability aids, informally |
| 2026-08-18 | "Chiseled" muscles |
| 2026-07-12 | You might need to lose a few to get them |
| 2026-05-10 | Situps tighten them |
| 2026-03-23 | Muscles in a six-pack |
| 2026-01-18 | "Chiseled" features |
| 2026-01-06 | Tummy muscles |
| 2025-11-15 | Twist targets, informally |
| 2025-11-12 | Washboard parts |
| 2025-11-03 | "Six-pack" muscles |
| 2025-09-01 | "Six-pack" muscles, informally |
| 2025-05-22 | Olympic diver's pride, maybe |
| 2025-04-09 | They might be made of steel, hyperbolically |
| 2025-04-06 | Hard core features, informally |
| 2025-03-23 | Planks can build them |
| 2025-01-18 | Required safety feature on cars, in brief |
| 2024-12-26 | Targets of crunches, informally |
| 2024-12-09 | Six-pack muscles |
| 2024-11-25 | Components of a six-pack |
| 2024-10-21 | "Crunched" muscles, informally |
| 2024-09-13 | What jackknives can help to carve |
| 2024-07-11 | They're made in the kitchen and not at the gym, it's said |
| 2024-06-30 | Core components |
| 2024-06-13 | Mountain climbers work them |
| 2023-12-10 | Obliques, e.g. |
| 2023-10-28 | Twists are good for them |
| 2023-08-01 | Crunch muscles, for short |
| 2023-07-21 | Core group |
| 2023-06-04 | Core group |
| 2023-06-02 | Targets for crunches, informally |
| 2023-05-29 | Six-pack units, in brief |
| 2023-05-16 | "Ripped" muscles |
| 2023-05-05 | Muscles that stretch during pregnancy |
| 2023-03-12 | "Washboard" features |
| 2023-02-19 | Muscles targeted by planks |
| 2023-02-14 | Plank targets |
| 2023-01-11 | Muscles tightened by planking, in brief |
| 2023-01-05 | Pilates target |
| 2022-12-19 | "Washboard" muscles, informally |
| 2022-10-14 | They get harder the more you work out |
| 2022-09-10 | Midsection, in brief |
| 2022-08-01 | Situps tighten them |
| 2022-06-22 | They can be sculpted and chiseled |
| 2022-06-16 | Core assets? |
| 2022-06-07 | Six-pack contents |
| 2022-02-13 | Plank targets |
| 2021-10-28 | Core group |
| 2021-09-01 | Midsection section, informally |
| 2021-08-19 | They're used in a crunch |
| 2021-08-03 | Body parts sometimes compared to steel |
| 2021-05-26 | Prominent features on firefighter calendars |
| 2021-05-01 | Focus of middle management? |
| 2021-04-17 | Targets of leg raises, informally |
| 2021-01-14 | Core features |
| 2020-12-14 | Parts of the body that are "crunched" |
| 2020-10-08 | Core components, for short |
| 2020-08-12 | Auto safety feature preventing skidding, for short |
| 2020-08-03 | Muscles that get "crunched" in crunches |
| 2020-06-22 | Core muscles, in brief |
| 2020-06-05 | Focus for a core workout |
| 2020-05-13 | Ones feeling the crunch? |
| 2020-05-11 | Muscles that are targets of planking, informally |
| 2020-05-08 | Gymgoer's pride |
| 2020-05-05 | "Six-pack" muscles |
| 2020-02-29 | Core part, informally |
| 2019-12-03 | "Six-pack" muscles |
| 2019-10-01 | Crunches work them |
| 2019-09-02 | Muscles strengthened by belly dancing, for short |
| 2019-07-16 | Targets of plank exercises |
| 2019-06-03 | Midsection muscles, briefly |
| 2019-02-19 | Midriff muscles, for short |
| 2018-12-04 | "Washboard" muscles |
| 2018-10-28 | Midriff muscles, for short |
| 2018-09-25 | Muscles in sit-ups, informally |
| 2018-09-10 | Part of the body that crunches work |
| 2018-08-15 | Muscles used in a Russian twist, for short |
| 2018-06-27 | Core muscles |
| 2018-06-14 | Some six-packs |
| 2018-04-11 | Tummy muscles |
| 2018-04-03 | "Six-pack" |
| 2018-01-28 | Auto safety feature to prevent skidding, for short |
| 2017-12-17 | Things that people like to have ripped? |
| 2017-08-14 | Torso muscles, briefly |
| 2017-04-27 | Core parts |
| 2017-02-13 | "Six-pack" muscles |
| 2017-01-04 | Target of crunches |
| 2016-12-15 | Chippendales dancers have nice ones |
| 2016-05-19 | Obliques, e.g. |
| 2016-02-24 | "Six-pack" muscles |
| 2016-02-14 | The pack in a six-pack |
| 2015-12-18 | Core components |
| 2015-10-31 | Planks work them |
| 2015-07-21 | Muscles that may be sculpted, informally |
| 2015-07-20 | Muscles that are crunched |
| 2015-06-30 | Toning targets, for short |
| 2015-05-07 | Contents of some six-packs |
| 2015-03-11 | Crunch beneficiaries |
| 2015-01-14 | Gym rat's "six-pack" |
| 2014-12-04 | Common workout target |
| 2014-10-27 | Muscles that are crunched |
| 2014-09-15 | Stomach muscles, for short |
| 2014-06-17 | Things that exercisers crunch |
| 2014-06-06 | Washboard parts |
| 2014-05-03 | ___ of steel |
| 2014-03-23 | Crunches crunch them |
| 2014-01-12 | Pilates targets |
| 2013-11-20 | Six-pack ___ |
| 2013-10-07 | Belly muscles, for short |
| 2013-09-29 | They may improve in crunch time |
| 2013-09-08 | Contents of some six-packs |
| 2013-07-30 | Torso muscles, for short |
| 2013-07-28 | Auto safety feature, for short |
| 2013-07-19 | Exercise target |
| 2013-07-09 | Six-pack muscles |
| 2013-07-02 | Tummy muscles |
| 2013-07-01 | Six-pack units |
| 2013-05-20 | Muscles that benefit from crunches |
| 2013-03-23 | Focus of middle management? |
| 2013-03-11 | Stomach muscles, informally |
| 2013-01-14 | They get crunched in gyms |
| 2012-11-07 | Crunch targets |
| 2012-10-07 | Things used during crunch time? |
| 2012-08-06 | Belly muscles |
| 2012-07-04 | Washboard ___ |
| 2012-04-16 | Stomach muscles, for short |
| 2012-03-11 | Bowflex target |
| 2011-09-28 | Gym rat's "six-pack" |
| 2011-09-22 | Muscles covering some 32-Down |
| 2011-08-28 | Ones crunched during crunch time? |
| 2011-05-15 | Car safety feature, for short |
| 2011-05-10 | Situps tone them |
| 2011-02-08 | Six-pack set |
| 2011-01-05 | Sit-up muscles |
| 2010-10-18 | "Washboard" muscles |
| 2010-02-09 | Tummy muscles |
| 2010-01-08 | Things used during crunch time? |
| 2009-12-07 | Tummy muscles |
| 2009-07-12 | They may be crunched |
| 2009-06-06 | Some are sculpted |
| 2009-05-17 | Target of core workouts |
| 2009-03-17 | Tummy muscles |
| 2009-01-25 | Objects of core workouts |
| 2009-01-02 | They look better when they're ripped |
| 2008-11-29 | Trunk supporters |
| 2008-05-13 | They may be crunched |
| 2007-09-24 | Muscles to crunch |
| 2007-06-14 | Midbody muscles |
| 2007-06-04 | Tummy muscles |
| 2007-02-27 | Belly muscles |
| 2007-01-02 | Crunched muscles |
| 2006-10-20 | Exerciser's target |
| 2006-09-09 | Workout target, for short |
| 2006-05-24 | Sit-ups target |
| 2006-05-23 | Tummy muscles |
| 2006-05-03 | Situp targets |
| 2006-03-30 | Bodybuilder's pride |
| 2006-02-05 | Stomach muscles, for short |
| 2005-08-19 | Car safety feature, for short |
| 2005-07-13 | Belly muscles |
| 2005-05-01 | Workout target |
| 2005-03-31 | They're crunched |
| 2005-03-17 | Things to crunch |
| 2004-10-06 | Six-pack ___ |
| 2004-08-09 | Midsection muscles, for short |
| 2004-07-31 | Exerciser's pride |
| 2004-06-23 | "Washboard" body parts |
| 2004-05-18 | Middle manager's focus? |
| 2004-04-25 | Sit-up target |
| 2004-04-01 | Exerciser's target |
| 2004-03-01 | Middle muscles, for short |
| 2003-08-14 | ___ of Steel (video classic) |
| 2003-06-25 | Crunch targets |
| 2003-04-30 | Focus of stomach-crunching |
| 2003-01-01 | They may be crunched in a gym |
| 2002-12-08 | Situps' target |
| 2002-11-05 | Tummy muscles |
| 2002-05-27 | Stomach muscles, briefly |
| 2002-05-13 | Stomach muscles, for short |
| 2001-11-22 | Washboard ___ |
| 2001-07-08 | Exercise target |
| 2000-08-30 | Crunches tighten them |
| 2000-06-13 | Stomach muscles, briefly |
| 2000-01-18 | New-car feature, for short |
| 2000-01-12 | Muscles used in situps |
| 1999-11-18 | Situps strengthen them |
| 1999-10-25 | Midbody muscles |
| 1999-08-15 | Muscles on 13-Down |
| 1999-04-30 | They may be chiseled |
| 1999-02-22 | Stomach muscles |
| 1998-12-24 | Pecs' kin |
| 1998-12-21 | Not present: Abbr. |
| 1998-11-03 | Stomach muscles, for short |
| 1998-08-19 | Tummy muscles |
| 1998-06-18 | Exercise target |
| 1998-01-01 | Certain muscles, informally |
| 1997-10-02 | Torso's washboard |
| 1997-09-17 | Tummy muscles |
| 1997-09-01 | Sit-ups firm these |
| 1997-07-20 | Sit-up benefactors |
| 1997-05-15 | Bodybuilder's pride |
| 1997-01-27 | Stomach muscles, for short |
| 1997-01-26 | Sit-ups strengthen them |
| 1996-08-11 | Crunches work them |
| 1996-07-03 | Stomach muscles, for short |
| 1996-04-14 | Stomach muscles |
| 1995-11-08 | New car offering, for short |
| 1995-10-17 | Modern car feature: Abbr. |
| 1995-10-08 | Report card abbr. |
| 1995-09-24 | Sits-up improve them |
| 1995-08-13 | Sit-ups tighten them |
| 1995-07-25 | Stomach muscles, for short |
| 1995-04-09 | Tummy muscles |
| 1994-10-05 | Pumper's pride |
| 1994-07-12 | Certain muscles, informally |