Sleep, water, and the rest

What you need to do

• Sleep 7 or more hours. Short sleep measurably raises hunger and shifts what you lose toward muscle.
• Drink before you eat. A big glass of water before each meal. About 1.6 litres a day for women, 2 for men, more in heat or on a GLP-1 medicine, where thirst goes quiet with hunger.
• Alcohol. Count it, cut it, and keep it away from the evening after you lift. Nobody here is telling you to quit. Know it is pulling against you.
• Calcium and vitamin D. 1,000 to 1,200 mg of calcium a day from food first; vitamin D 600 to 800 IU if you have a reason to supplement.
• Creatine. 5 g of plain creatine monohydrate a day, if you lift. Optional, cheap, well studied. The one-pager.
• Skip: fat burners, metabolism boosters, greens powders, and collagen as a protein source.

Challenges that build this

What the research says

Two nights of four-hour sleep raised the hunger hormone ghrelin 28% and reported hunger 24% [94]. Adults who extended short sleep by about 1.2 hours ate 270 fewer calories a day with no diet advice at all [95]. Two cups of water before each meal gave adults 55 to 75 about 44% more weight loss over 12 weeks in one small trial [76]. Older adults need scheduled fluids because thirst fades with age [81].

Alcohol fragments the second half of the night, starting around two drinks [78], a heavy dose after training cuts muscle building by about a quarter [77], and the Surgeon General now links it to seven cancers [79]. Calcium targets are 1,000 to 1,200 mg a day, food first [82]; routine vitamin D testing is not recommended for healthy adults, and supplementing is suggested over 75 or with a reason [83]. Creatine at 3 to 5 g a day added about 1.4 kg of lean tissue in older adults who lift and is safe in healthy people [49] [48]; women carry lower stores and respond well [51].

Sources on this page

94. Spiegel 2004, Ann Intern Med. Two nights of four-hour sleep raised the hunger hormone ghrelin 28% and reported hunger 24%. Short sleep is an appetite problem before it is anything else.
95. Tasali 2022, JAMA Intern Med. Adults sleeping under 6.5 hours who extended sleep by about 1.2 hours ate 270 fewer calories a day with no diet advice at all.
76. Dennis 2010, Obesity. Adults 55 to 75 who drank two cups of water before each meal lost about 44% more weight over 12 weeks. One small trial; cheap and harmless.
81. ESPEN 2022 geriatric guideline, Clin Nutr. Older women should drink about 1.6 litres a day and men 2.0, more in heat or with exercise. Thirst fades with age, so drinking has to be scheduled.
78. Alcohol and sleep meta-analysis 2024, Sleep Med Rev. Across 27 studies, alcohol cut dream sleep and fragmented the second half of the night, with disruption starting around two drinks.
77. Parr 2014, PLoS One. A heavy dose of alcohol after training cut muscle protein synthesis by about a quarter even with protein on board. The dose was large; one drink is not the same thing.
79. US Surgeon General 2025, alcohol and cancer. Alcohol is linked to seven cancers, and breast cancer risk rises from one drink a day. The old 'a glass a day is good for you' claim is no longer supportable.
82. Bone Health and Osteoporosis Foundation, calcium. Calcium 1,000 mg a day (men 51 to 70) or 1,200 mg (women over 50, men over 70), food first, supplements only to fill the gap.
83. Endocrine Society 2024, vitamin D guideline. Routine vitamin D testing is not recommended for healthy adults; supplementation is suggested for those over 75 and for people with a reason. 600 to 800 IU is the ordinary starting dose.
49. Chilibeck 2017, Open Access J Sports Med. In adults 57 to 70, creatine plus lifting added about 1.4 kg of lean tissue and more strength than lifting alone.
48. Kreider 2017, ISSN creatine position stand. Creatine monohydrate at 3 to 5 g a day is the best-studied supplement for lean mass and is safe in healthy adults over years of use.
51. Smith-Ryan 2021, Nutrients. Women carry 70 to 80% lower creatine stores than men, and postmenopausal women gain muscle size and function from creatine with training.
50. Chilibeck 2023, Med Sci Sports Exerc. Two years of creatine with exercise in 237 postmenopausal women did not change bone density. Creatine is for muscle, not bone.
46. Oikawa 2020, Am J Clin Nutr. In older women, whey switched on muscle building and collagen did not, even at matched doses. Collagen does not count toward your protein number.
90. Clark and Welch 2021, Nutr Health. Fat burners and 'metabolism boosters' did less than diet or exercise alone, and carry safety concerns. Skip them.
88. Deng 2023, J Orthop Surg Res. Across nine trials, omega-3 gave a small reduction in arthritis pain. May help a little; harmless; eat the fish first.