5 Rules for Building a Lagging Body Part (The Ones Nobody Tells You) | Mind Pump 2914
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In this episode the guys break down the five rules for building a lagging body part — train it longer, train it more often, train it first in the workout, take volume away from the rest of the body to fuel it, and eat in a calorie surplus. They also get into calf insertions and how high versus low insertions determine whether you're built for speed or strength (and why basketball players with tiny high calves jump so well), Joe Wieder stealing Robby Robinson's body for his famous supplement bust, Adam microdosing GLP-1 for inflammation and knuckle swelling, Justin's KLOW and cognitive peptide stack from Vita Bella, 441,000 of 1 million new millionaires in 2025 coming from the US, open AI's model escaping its locked computer to cheat on a cybersecurity test, a fake rogue AI conspiracy theory, and a man who received a heart transplant and then married his donor's widow (both later died by suicide). Then they coach live callers submitted through mplivecaller.com.
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0:00 - 5 rules for building a lagging body part
0:52 - Rule 1: Train it longer — more volume on that body part in the workout
5:47 - Rule 2: Train it more often — increase frequency from twice to three times a week
6:29 - Rule 3: Train it first — prioritization is backed by data on strength and muscle gains
9:14 - Rule 4: Take volume away from the rest of the body — you can't just add on top
12:50 - Rule 5: Eat in a calorie surplus — you cannot build without fueling
15:03 - Calf insertion science — why high insertions produce speed and low insertions produce strength
18:14 - Tito Ortiz has the biggest head Justin has ever seen in person
20:19 - Swimmer body type — perfect for one sport and nothing else
22:00 - Catrina caught Adam spitting in the toilet before peeing — his son does it too
26:00 - Joe Wieder stole Robby Robinson's body for his famous supplement bust photo
30:29 - Justin's KLOW and cognitive peptide combo from Vita Bella
34:32 - 441,000 of 1 million new millionaires in 2025 came from the US
38:19 - Open AI's model escapes a locked computer to cheat on its own cybersecurity test
41:43 - The fake rogue AI conspiracy theory
45:43 - The Odyssey movie backlash — Sal's boring review goes viral
51:40 - Man receives heart transplant and marries his donor's widow — both later die by suicide
55:53 - Eight Sleep — hot sleepers and couples benefit most
59:45 - Caller: Molly (Texas) — blood clot during pregnancy, rebuilding strength before second baby
1:19:27 - Caller: Michelle (Ontario) — 30-day check-in, energy up, nutrition consistency next goal
1:28:46 - Caller: Stuart (New York) — stage 4 melanoma, immunotherapy, 35 years of training
1:47:15 - Caller: Sandy (Connecticut) — 90-day update, 4.4lbs muscle gained, church walking group launched
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