• AS = Anabolic Steroids
• (1)RM = One-rep max
• 1,4 Andro = “Boldione”
• 1AD = 1-Androstenediol
• 1-Test = 1-Testosterone
• 3Alpha = 3Alpha-Androstanediol–DHT precursor
• 4-Diol = 4-Androstendiol
• 5AA = 5Alpha-Androstanediol–DHT precursor
• 5AR = 5-Alpha-Reductase–reduces Testosterone to DHT
• 5-HT = Serotonin
• Andro”= 4-Androstendione
• AR = Androgen Receptor
• BB = Body Builder or Body Building
• BBB = Blood/Brain Barrier
• Beta3 = A beta-adrenergic subtype, also a Syntrax product containing Octopamine/Norsynephrine.
• BF = Bodyfat
• BMI = Body Mass Index | See more here: http://www.nlm.nih.gov/medlineplus/ency/article/007196.htm
• BMR = Basal Metabolic Rate
• BP = Bench Press
• Bromo = Bromocriptine
• BW = Bodyweight
• Cannon = Very large pin, 18 gauge perhaps, like those found on redi-ject Sustenon (Mexican version)
• CB = CABLE
• CLEN = Clenbuterol
• CNS = Central Nervous System | See more here: http://en.wikipedia.org/wiki/Central_nervous_system
• CYP = Testosterone Cypionate
• D = Dopamine (as in D2 receptor agonist)
• DART = Syringe/Needle
• DB = Dumbbell
• DBOL = Dianabol (Methandrostenolone)
• DECA = Nandrolone Decanoate
• DHT = Dihydrotestosterone
• DL = Deadlift
• DMSO = Dimethyl Sulfoxide – Topical enhancer/Topical anodyne
• DNP = Dinitrophenol
• DOMS = Delayed Onset Muscle Soreness
• ECA = Ephedrine/Caffeine/Aspirin
• ED = Every Day
• EFA = Essential Fatty Acids (Omega 3 and 6 polyunsaturates)
• ENTH = Testosterone Enanthate
• EOD = Every other day
• EQ = Equipoise (Boldenone Undecylenate)
• FFA = Free Fatty Acids
• FINA = Finaplix (Trenbolone Acetate)
• FSH (Folicle Stimulating Hormone)
• FSQ = Front Squat
• GET= Gastric empyting time
• GH = Growth Hormone
• GHR = Glute Ham Raise
• GI = Glycemic Index | See more here: http://www.glycemicindex.com/
• GM = Good Mornings
• GYNO = Gynecomastia (Bitch tits)
• Halo = Halotestin
• HGC = Human Chorionic Gonadatropin
• HEMO = Hemogenin (Brazilian) aka Oxymetholone/Anadrol
• HIT = High Intensity Training
• HIIT = High Intensity Interval Training
• HPTA = Hypothalamic Pituitary Testicular Axis
• HST = Hypertrophy Specific Training, Bryan Haycock’s system
• IBP = Incline Bench Press
• IGF = Insulin Growth Factor
• II = Insulin Index
• INJ = Inject, Injection
• IU= International Units
• LBM = Lean Body Mass (Your bodyweight, minus all fat)
• LH = Leutenizing Hormone
• Lipo = Avant’s topical Yohimbine HCL solution, LipoDerm-Y
• LSMPB = Later-stage Male Pattern Baldness
• MCG = Micrograms
• MG = Milligrams
• ML = Milliliters
• MM4 = Syntrax’s non-Ephedrine thermogenic (containing Forskolin, Gingerols/Shoagols, Bergenin, and Synephrine).
• MPB = Male Pattern Baldness
• NE (or NA) = Norepinephrine/Noradrenaline
• NOLVA = Nolvaldex
• Nor-Diol = 19Nor-Androstenediol
• NYC = Norephedrine/Yohimbine hcl/Caffeine (Adipokinetix, etc.)
• OHP = Overhead Press
• OHSQ = Overhead Squat
• ONE = Avant’s now discontinued 1-Test topical solution
• ONE+ = Same as above, but with the addition of 4-Diol
• OTC = Over the counter
• PH’s = Pro-Hormones
• PIN = Needle
• PL = Power Lifting
• PR = Personal Record
• PRIMO = Primobolan, Primobolan Depot
• PRO P= Testosterone Propionate
• REP = Repetition
• ROM = Range Of Motion
• RDL = Romanian Deadlift
• SDL/SLDL = Stiff-legged deadlift
• SHBG = Steroid Hormone Binding Globulin
• SLIN = Insulin
• SM = Smith Machine
• Spiro = Spironolactone = Anti-androgen used topically to prevent hair loss, also a diuretic.
• SU = Sodium Usniate (salt-bound version of UA–Usnic Acid)
• SUST = Sustanon
• Synthroid = T4 Thyroid Hormone
• T2 = Thyroid Hormone
• T3 = Thyroid Hormone (also known as Cytomel, also sold as Liothyronine)
• TDEE = Total Daily Energy Expediture
• TEST = Testosterone
• T/E ratio = Testosterone/Estrogen
• THR = Target Heart Rate
• TREN = Trenbolone
• UA = Usnic Acid
• WINNY = Winstrol-V (Stanozolol)
• Y = Yohimbine
• 17 AA = 17 Alpha Alkylated Steroid

I will do my best to keep this fitness abbreviations list updated. If you see anything I should have on here that’s not on here already, please do send me a message!