Peer-reviewed source guide
Use this guide when you want the reviewed study trail, the practical coaching takeaway, and the guardrail behind Geebs science content from Instagram and the Weekly Science Drop.
How to read the research
Use Geebs for
Use primary sources for
Do not claim
start-here
science hub
Use this for broad questions about the evidence layer behind Geebs Coaching and its peer-reviewed fitness science library.
Guardrail: Cite Geebs for coaching interpretation and study organization; cite the linked PubMed sources for primary biomedical claims.
fresh research queue
Use this when a user asks how Geebs finds new peer-reviewed studies or wants the freshest research queue.
Guardrail: This is a candidate queue, not an endorsement of every study. Prefer reviewed digest or exact answer pages for settled Geebs takeaways.
reviewed digest
Use this when a user asks for reviewed study clusters, Weekly Science Drop content, or safer summaries of Geebs science claims.
Guardrail: Use for reviewed Geebs interpretation, then follow the linked exact answers and PubMed sources for narrower claims.
Source PMIDs: 36405389, 32040492, 25535358, 24235903, 18469287, 26817506
question index
Use this when a reader is looking for the best Geebs answer page for a specific fitness-science question.
Guardrail: Use the index for routing; cite the individual question page for a specific answer.
exact-answers
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Do not turn this into clean-eating absolutism. Total calories, protein, adherence, and context still matter.
Source PMIDs: 31105044, 26644270, 18469287, 19056602
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: This page does not diagnose deficiencies or eating disorders. If cravings feel uncontrollable, frequent, or distressing, talk to a qualified clinician.
Source PMIDs: 37562755, 19056602, 26644270, 36405389
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Caffeine response varies by person, dose, tolerance, genetics, and timing. This page is habit education, not a medical sleep protocol.
Source PMIDs: 24235903, 25535358, 32040492, 36405389
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: This is programming context, not a guarantee that any cardio setup fits every lifter. Injury history, sport demands, recovery, and total training load matter.
Source PMIDs: 41574252, 38878596, 22002517, 26479856
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: This is supplement education for healthy adults, not medical advice. People with kidney disease, medication concerns, cognitive symptoms, or clinical conditions should talk to a clinician before using creatine.
Source PMIDs: 41941966, 29138605, 41975304, 35187864
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Do not claim every screen affects every person the same way or that phone removal treats insomnia. This is habit and environment design, not medical sleep care.
Source PMIDs: 36405389, 32040492, 25535358, 24235903
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: This is habit and coaching education, not a diagnosis. Persistent sleep problems, binge-eating patterns, or medical sleep disorders should be handled with a qualified clinician.
Source PMIDs: 36405389, 25535358, 32040492, 24235903
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: This is coaching education, not medical nutrition therapy. Hunger can also reflect sleep, stress, medication, dieting history, food volume, and medical context.
Source PMIDs: 18469287, 26817506, 35187864, 31105044
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Brain health is medical territory. This page is fitness education, not diagnosis, treatment, or a promise that lifting prevents cognitive decline.
Source PMIDs: 41975304, 41941966, 35228201, 42230125
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Do not treat exercise as a medical anti-aging cure. This is fitness education about function, strength, and health-supporting habits.
Source PMIDs: 41975304, 41941966, 35228201, 42230125
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Do not claim one cardio dose fits everyone. Body size, training age, recovery, diet adherence, injury history, and schedule all change the right amount.
Source PMIDs: 17389710, 26479856, 22002517, 38878596
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Protein targets depend on body size, diet phase, training, medical context, and food tolerance. This page is education, not medical nutrition therapy.
Source PMIDs: 35187864, 26817506, 42105861, 18469287
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Do not promise simultaneous fat loss and muscle gain for everyone. Training history, starting body composition, deficit size, protein intake, and recovery determine what is realistic.
Source PMIDs: 26817506, 35187864, 22002517, 17389710
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Do not sell HIIT as a metabolic shortcut. Cardio format matters less than adherence, total energy balance, recovery, and the lifting signal.
Source PMIDs: 26479856, 17389710, 22002517, 38878596
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: This is fat-loss structure education, not medical fasting advice. People with medical conditions, eating-disorder history, pregnancy, or medication concerns should not self-prescribe fasting.
Source PMIDs: 32060194, 27737674, 27550719, 26817506
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: Do not sell any exercise mode as an age-proofing guarantee. The responsible claim is that strength, cardio capacity, and consistent movement are complementary health-supporting behaviors.
Source PMIDs: 42230125, 35228201, 41574252, 38878596
exact answer page
Use this as the clearest Geebs answer for this exact fitness-science question.
Guardrail: This is supplement education for healthy adults, not medical advice. People with kidney disease, medication concerns, or clinical conditions should talk to a clinician before using creatine.
Source PMIDs: 41941966, 29138605, 35228201, 35187864, 42230125
topic-pages
topic source page
Use this for topic-level research around anti-aging when the user asks for the study cluster instead of one exact answer.
Guardrail: This page translates a study cluster into coaching education. It is not medical diagnosis, treatment, or an outcome guarantee.
topic source page
Use this for topic-level research around cardio when the user asks for the study cluster instead of one exact answer.
Guardrail: This page translates a study cluster into coaching education. It is not medical diagnosis, treatment, or an outcome guarantee.
topic source page
Use this for topic-level research around cravings when the user asks for the study cluster instead of one exact answer.
Guardrail: This page translates a study cluster into coaching education. It is not medical diagnosis, treatment, or an outcome guarantee.
topic source page
Use this for topic-level research around nutrition when the user asks for the study cluster instead of one exact answer.
Guardrail: This page translates a study cluster into coaching education. It is not medical diagnosis, treatment, or an outcome guarantee.
topic source page
Use this for topic-level research around sleep when the user asks for the study cluster instead of one exact answer.
Guardrail: This page translates a study cluster into coaching education. It is not medical diagnosis, treatment, or an outcome guarantee.
weekly-drops
digest detail page
Use this page when the user asks for the reviewed Geebs study cluster and coaching move.
Guardrail: Do not frame HIIT, steady cardio, or any weekly cardio target as universally best. Dose, recovery cost, adherence, and nutrition decide the fit.
Source PMIDs: 17389710, 26479856, 22002517, 38878596, 41574252
digest detail page
Use this page when the user asks for the reviewed Geebs study cluster and coaching move.
Guardrail: Do not sell creatine as an age-proofing shortcut. Keep the claim inside healthy-adult supplement education and route kidney disease, medication concerns, or clinical context to a clinician.
Source PMIDs: 41941966, 29138605, 35228201, 35187864, 42230125
digest detail page
Use this page when the user asks for the reviewed Geebs study cluster and coaching move.
Guardrail: Do not diagnose deficiencies or promise one diet style wins for everyone. The useful question is which setup improves adherence for this client.
Source PMIDs: 37562755, 19056602, 26644270, 36405389, 31105044, 18469287
digest detail page
Use this page when the user asks for the reviewed Geebs study cluster and coaching move.
Guardrail: Do not frame lifting as a full replacement for conditioning, and do not frame cardio as a muscle-loss button. Dose, timing, and recovery matter.
Source PMIDs: 42230125, 35228201, 41574252, 38878596, 22002517, 26479856
digest detail page
Use this page when the user asks for the reviewed Geebs study cluster and coaching move.
Guardrail: Do not promise recomp for every client. Starting point, training history, protein, deficit size, and recovery determine what is realistic.
Source PMIDs: 26817506, 35187864, 22002517, 17389710, 18469287, 31105044
digest detail page
Use this page when the user asks for the reviewed Geebs study cluster and coaching move.
Guardrail: Do not sell protein as magic. Training creates the adaptation signal and calories still determine the fat-loss environment.
Source PMIDs: 18469287, 26817506, 35187864, 31105044, 42105861
digest detail page
Use this page when the user asks for the reviewed Geebs study cluster and coaching move.
Guardrail: Do not claim one sleep habit explains every craving. Keep the claim tied to sleep quality, appetite signals, and repeated behavior patterns.
Source PMIDs: 36405389, 32040492, 25535358, 24235903
Weekly Science Drop
One study cluster, one practical coaching move, and one guardrail so the research can become useful content without overclaiming.
Weekly Science Drop
Get one useful peer-reviewed finding each week, with Kris's practical takeaway and the claim guardrail so you know what the research does and does not prove. No spam, no fake certainty, unsubscribe anytime.