Health references and editorial approach
The book links to public health guidance and published research. References explain the topics listed below; they are not endorsements of the book. Research findings depend on the population, methods and outcome studied.
Omar Abdoh is the publisher, based in Jordan. This edition has received AI-assisted research and editing. No claim of independent medical review, professional certification or exclusively human authorship is made. Examples are illustrative unless explicitly identified otherwise.
Last source review: 2026-09-11. General education for adults; individual health decisions belong with an appropriate professional.
- CDC: Steps for losing weight
Weight management, individual factors and realistic planning.
- CDC: About body mass index
BMI as one screening measure, with limitations.
- NIDDK: About the Body Weight Planner
Energy estimates and the limits of weight-planning tools.
- Morton et al., British Journal of Sports Medicine (2018): Protein supplementation and resistance training: systematic review and meta-analysis
Evidence in healthy adults doing resistance training; not a prescription for illness.
- Morton et al., Journal of Applied Physiology (2016): Neither load nor systemic hormones determine training-mediated hypertrophy or strength gains in resistance-trained young men
A specific trial of resistance-trained young men, not every population or training method.
- CDC: Adult activity: an overview
General aerobic and muscle-strengthening activity guidance; not validation of an exact split.
- NIH / NHLBI: How much sleep is enough?
Adult sleep-duration guidance.
- NIH Office of Dietary Supplements: Exercise and athletic performance: health professional fact sheet
Ingredient-specific evidence and safety limitations.
- NIH Office of Dietary Supplements: Vitamin D: health professional fact sheet
Vitamin D assessment, testing and safety.
- NIDDK: Diagnosis and treatment of binge eating disorder
Professional treatment for binge eating; habit advice is not a substitute.
- MedlinePlus / National Library of Medicine: Sports injuries
General injury care and when to stop activity.
- MedlinePlus / National Library of Medicine: Sprains and strains
Injury care varies; individual rehabilitation is needed.
- CDC: About water and healthier drinks
Water needs vary with the person and conditions.
- NIDDK: Your digestive system and how it works
Basic digestive anatomy and nutrient processing.
- NIH / National Institute on Aging: Calorie restriction and fasting diets: what do we know?
Distinguishing fasting from restriction and limits of translating research to people.
- MedlinePlus / National Library of Medicine: How to understand your lab results
Reference ranges and interpretation in clinical context.
- CDC / NIOSH: Signs and symptoms of rhabdomyolysis
Concerning symptoms need medical assessment; symptoms alone cannot rule it out.
- CDC: Older adult activity: an overview
Aerobic, strengthening and balance activity for older adults.
- NIDDK: Health tips for adults
General eating and activity habits.