{"id":67377,"date":"2026-09-29T09:09:23","date_gmt":"2026-09-28T23:09:23","guid":{"rendered":"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=67377"},"modified":"2026-09-29T09:09:23","modified_gmt":"2026-09-28T23:09:23","slug":"the-72-hour-rule-for-building-muscle-dr-andy-galpin","status":"publish","type":"post","link":"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=67377","title":{"rendered":"The 72-Hour Rule for Building Muscle | Dr. Andy Galpin"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-67378\" src=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/09\/Dr_Andy_Galpin_On_Building_Muscle.jpg\" alt=\"The 72-Hour Rule for Building Muscle | Dr. Andy Galpin\" width=\"1111\" height=\"624\" srcset=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/09\/Dr_Andy_Galpin_On_Building_Muscle.jpg 1111w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/09\/Dr_Andy_Galpin_On_Building_Muscle-300x168.jpg 300w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/09\/Dr_Andy_Galpin_On_Building_Muscle-1024x575.jpg 1024w, https:\/\/www.tomgrimshaw.com\/tomsblog\/wp-content\/uploads\/2026\/09\/Dr_Andy_Galpin_On_Building_Muscle-768x431.jpg 768w\" sizes=\"auto, (max-width: 767px) 89vw, (max-width: 1000px) 54vw, (max-width: 1071px) 543px, 580px\" \/><\/p>\n<p>Dr. Andy Galpin explains the fundamentals of training for muscle growth, focusing on mechanical tension as the primary driver, the &#8220;72-hour rule&#8221; for stimulating each muscle, why rep ranges from 5 to 30 can produce equal hypertrophy as long as sets are taken within 1 to 3 reps of failure, and how structured progressive overload is the most common missing piece when progress stalls.<\/p>\n<p>Click to view the video:\u00a0<a href=\"https:\/\/www.youtube.com\/watch?v=4Xg0osmXufU\">https:\/\/www.youtube.com\/watch?v=4Xg0osmXufU<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dr. Andy Galpin explains the fundamentals of training for muscle growth, focusing on mechanical tension as the primary driver, the &#8220;72-hour rule&#8221; for stimulating each muscle, why rep ranges from 5 to 30 can produce equal hypertrophy as long as sets are taken within 1 to 3 reps of failure, and how structured progressive overload &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=67377\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;The 72-Hour Rule for Building Muscle | Dr. Andy Galpin&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,6],"tags":[],"class_list":["post-67377","post","type-post","status-publish","format-standard","hentry","category-general-interest","category-health-tips"],"_links":{"self":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/67377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=67377"}],"version-history":[{"count":1,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/67377\/revisions"}],"predecessor-version":[{"id":67379,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/67377\/revisions\/67379"}],"wp:attachment":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=67377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=67377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=67377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}