As questões da higiene caseira e pessoal...

... respondidas pelos peritos:
https://amp.theguardian.com/lifeandstyle/2019/feb/21/self.html

A leucemia e o excesso de higiene?

(no primeiro ano de vida). Parece que sim:
https://www.theguardian.com/science/2018/dec/30/children-leukaemia-mel-greaves-microbes-protection-against-disease

Citando:
"Acute lymphoblastic leukaemia is caused by a sequence of biological events. The initial trigger is a genetic mutation that occurs in about one in 20 children.

“That mutation is caused by some kind of accident in the womb. It is not inherited, but leaves a child at risk of getting leukaemia in later life,” adds Greaves.

For full leukaemia to occur, another biological event must take place and this involves the immune system. “For an immune system to work properly, it needs to be confronted by an infection in the first year of life,” says Greaves. Without that confrontation with an infection, the system is left unprimed and will not work properly.”

And this issue is becoming an increasingly worrying problem. Parents, for laudable reasons, are raising children in homes where antiseptic wipes, antibacterial soaps and disinfected floorwashes are the norm. Dirt is banished for the good of the household."

Ai as limpezas...

Eis a teoria, sendo que a limpeza de uma habitação (e do seu ar) está intimamente ligada à saúde dos residentes:
http://m.huffpost.com/uk/entry/uk_58bedceae4b033be1468bfbe

Sobre a higiene... (Feminina)

... vaginal no período menstrual (rimou!). 

Directamente da Índia, esse país com tanto para ensinar:
http://m.indiatoday.in/story/5-tips-menstrual-hygiene-day-care-sanitation-lifest/1/964966.html

Mais sobre a higiene do sono

Sobre a higiene do sono, os motivos que podem estar a sabotar o nosso sono e recomendações para cada um deles:
http://www.gazettelive.co.uk/news/health/you-getting-enough-sleep-heres-12479496


Citando:
"As well as the new study by Aviva healthcare, an increasing raft of health research suggests it’s time we took our sleep even more seriously, as deprivation can have detrimental effects on everything from our brain power to blood pressure, and has even been linked to early death."


O estudo Health Checkup Report (Aviva, Reino Unido, 2015):
https://www.aviva.co.uk/healthcarezone/document-library/files/he/healthcheckukreport2015.pdf

Recomendações para dormir bem (sequências/fórmulas)

Um pouco senso comum mas é uma sequência/formulação interessante para relembrar:
http://www.telegraph.co.uk/news/newstopics/howaboutthat/12182052/Be-more-productive-This-simple-10-3-2-1-0-formula-could-help.html


Citando:
"The 10-3-2-1-0 formula
10 hours before bed: No more caffeine
3 hours before bed: No more food or alcohol
2 hours before bed: No more work
1 hour before bed: No more screen time
0: The number of times you hit the snooze button in the morning

“The single most important factor in winning your mornings and owning your days is to get up 15 minutes earlier and work on your No. 1 priority before anyone else is awake. It's that simple,” he explains.
“When you follow this formula, you'll get more done and stop letting the big opportunities in your life slip away.”"






E esta sequência/formulação induz alegadamente o sono num minuto (acaba com as insónias):
http://www.telegraph.co.uk/science/2016/03/12/simple-4-7-8-breathing-trick-can-induce-sleep-in-60-seconds/


Citando:
"The trick is holding the breath for four seconds, breathing out then holding for seven seconds. After that exhale completely for a count of eight. The steps are then repeated between two and four times.

Dr Weil says it works because it allows the lungs to become fully charged with air, allowing more oxygen into the body, which promotes a state of calm.


“You have to do this two times a day religiously. It will become a wonderful way to help you fall asleep. You can do it more often throughout the day,” added Dr Weil."
(...)
"The method is based on an ancient Indian practice called pranayama, which means regulation of breath, and is used widely in yoga and pilates."


(baseado no ioga e pilates)

Limpezas - quando, com o quê e como?

Artigo muito exaustivo sobre limpezas na casa. Tipo limpezas for dummies, com dicas para todas as zonas e a frequência com que devem ser limpas:
http://www.walesonline.co.uk/news/wales-news/heres-how-often-you-should-11085917