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  • Bodybuilding’s Secret Weapon

    Scientific evidence shows that tyrosine steps up the production of catecholamines when muscle fatigue begins to set in.

    George Redmon, Ph.D., N.D.January 31, 2010
  • Fountain of Youth

    Plasma creatinine, but not creatinine clearance, increased in the supplement group, but there were no changes in serum creatine kinase activity...

    Jose Antonio, Ph.D.January 28, 2010
  • HMB: Does It Work or Not?

    Beta-hydroxy-beta-methylbutyrate, or HMB, is a downstream metabolite of the branched-chain amino acid leucine. Many studies have shown that leucine is by...

    Jerry BrainumJanuary 19, 2010
  • Fat-Burning Breakthrough

    The foundational ingredient of Hydroxycut Hardcore X has been shown to elevate resting metabolic rate and increase intensity levels, which, research...

    Iron Man MagazineJanuary 3, 2010
  • Nutrient Combo Builds More Muscle

    The supplements chosen for the study have an impressive record of effectiveness for bodybuilding purposes.

    Jerry BrainumDecember 26, 2009
  • PEG Your Power Output

    Specifically, PEG is believed to enhance the gastrointestinal absorption of creatine by increasing permeability coefficients in the GI tract and across...

    Jose Antonio, Ph.D.December 23, 2009
  • Super Algae

    Spirulina—you know, that gooey green stuff you see folks blending at natural food stores—may actually be good for you. Personally, I...

    Jose Antonio, Ph.D.December 14, 2009
  • Calcium: A Testosterone Booster?

    Mention the word calcium, and just about everyone thinks about bones or teeth. It’s true that the majority of calcium is...

    Jerry BrainumDecember 8, 2009
  • Natural Anabolics

    Regular IRON MAN readers know the name Jerry Brainum well. He’s IM’s go-to nutrition-science guru who has his thumb on—no, make...

    Steve HolmanNovember 26, 2009
  • Shocking Protein Power

    Stress in its many guises is unavoidable. The body has numerous ways of dealing with the effects of stress, ranging from...

    Jerry BrainumNovember 25, 2009
  • GNC AMP-ed Supplements

    For avid athletes looking for a serious competitive edge, GNC, the leading global specialty retailer of nutritional products, has introduced Pro...

    Iron Man MagazineNovember 24, 2009
  • More Reps With Betaine

    It isn’t clear, at least to me, why betaine can help performance. True, it helps farm animals grow bigger and with...

    Jose Antonio, Ph.D.November 17, 2009
  • Beta-Alanine: No Age Limit

    What causes muscle fatigue? One theory holds that a rise in the acid produced in muscle during exercise interferes with the...

    Jerry BrainumOctober 30, 2009
  • Natural Testosterone Boosters Pt 2

    Stinging nettle shows up in many current testosterone boosters. Several studies show that the herb is useful for preventing prostate gland...

    Jerry BrainumOctober 18, 2009
  • Pump It Up With GPLC and NO

    Perhaps some of the more exciting avenues of research regarding NO and the potential benefits of GPLC are in the area...

    Jose Antonio, Ph.D.October 6, 2009