[1] https://www.researchgate.net/publication/317321468_The_effects_of_a_calisthenics_training_intervention_on_posture_strength_and_body_composition
[2] https://www.legalmatch.com/law-library/article/gym-accident-statistics.html
[3] https://www.tariolaw.com/weight-lifting-injuries-on-the-rise/
[4] https://medicalxpress.com/news/2018-03-military-surgeons-alarming-frequency-bench.html
[5] https://medicalxpress.com/news/2019-04-tennis-elbow-treatmentand.html
[6] https://www.thestar.com/news/gta/2016/01/20/the-death-of-the-sit-up.html
[7] https://www.arthritis.org/living-with-arthritis/exercise/arthritis-friendly/body-weight-exercises.php
[8] https://draxe.com/fitness/workouts/bodyweight-exercises/
[9] https://www.unm.edu/~lkravitz/Article%20folder/HIITvsCardio.html
[10] https://movementmonk.xyz/shaolin-flexibility-exercises/
[11] https://bestlifeonline.com/genghis-khan-workout/
[12] https://www.unm.edu/~lkravitz/Article%20folder/eccentricUNM.html
[13] https://www.physiology.org/doi/full/10.1152/japplphysiol.01098.2006
[14]https://www.unboundmedicine.com/medline/citation/22994393/full_citation/Extremely_low_volume_whole_body_aerobic_resistance_training_improves_aerobic_fitness_and_muscular_endurance_in_females
[15] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1320426/
[16] https://www.pritikin.com/best-workout-for-burning-fat-metabolic-conditioning
[17] https://www.unm.edu/~lkravitz/Article
[18] https://www.forbes.com/sites/markmurphy/2018/04/15/neuroscience-explains-why-you-need-to-write-down-your-goals-if-you-actually-want-to-achieve-them/#1381bcbe7905
[19] https://www.sciencedaily.com/releases/2016/03/160301120046.htm
[20] https://www.medicalnewstoday.com/articles/287046.php
[21] https://draxe.com/health/weight-loss/charts-american-diet/
[22] https://www.sciencedaily.com/releases/2016/01/160114213443.htm
[23] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2738337/