5-HT	Serotonin
ACG	Actigraphy
ACh	Acetylcholine
AHI	Apnea-hypoapnea index
AIS	Athens Insomnia Scale
ALA	Alpha-linolenic acid
AM	Ante meridiem
APOE	Apolipoprotein E
ASBQ	Athlete Sleep Behavior Questionnaire
ASSQ	Athlete Sleep Screening Questionnaire
ATP	Adenosine triphosphate
BAX	Bcl-2 associated X protein
BCL2	B-cell lymphoma protein 2
BDNF	Brain-derived neurotrophic factor
Bglap2	Osteocalcin
BMAL1	Brain and muscle ARNT-like protein 1
Bsp	Bone sialoprotein
CBD	Compound cannabidiol
CBT-I	Cognitive Behavioural Therapy for Insomnia
CCAR2	Apoptosis regulator 2
CO2	Carbon dioxide
DFUs	Diabetic foot ulcers
DHA	Docosahexaenoic acid
Dmp1	Dentin matrix protein 1
EEG	Electroencephalogram
EPA	Eicosapentaenoic acid
FODMAP	Fermentable oligosaccharides, monosaccharides, and polyols
GABA	Gamma-aminobutyric acid
GH	Growth hormone
GI	Glycemic Index
ID	Insomnia Disorder
IGF-1	Insulin-like growth factor 1
IL-1β	Interleukin-1β
IL-6	Interleukin 6
IOC	International Olympic Committee
ISI	Insomnia Severity Index
LEA	Low energy availability
MCTQ	Munich Chronotype Questionnaire
MEQ	Morningness-Eveningness Questionnaire
MyoD	Myoblast determination protein
NaSSA	Noradrenergic and specific serotonergic antidepressant
NCAA	National Collegiate Athletic Association
NGF	Nerve growth factor
NO	Nitric oxide
NREM	Non-rapid eye movement
OSA	Obstructive sleep apnea
PET	Positron emission tomography
PGO	Ponto-geniculo-occipital
PM	Post meridiem
PSG	Polysomnography
PSQI	Pittsburgh Sleep Quality Index
PUFA	Polyunsaturated fatty acid
REM	Rapid eye movement
RHT	Retino-hypothalamic tract
RLS	Restless legs syndrome
SCN	Hypothalamic suprachiasmatic nucleus
SD	Sleep disorders
SIRT1	Sirtuin 1
SHY	Synaptic Homeostasis Hypothesi
Spp1	Osteopontin
THC	Tetrahydrocannabinol
TNF-α	Tumor necrosis factor-α
TUE	Therapeutic Use Exemption
WADA	World Anti-Doping Agency
WASO	Wakefulness after sleep onset