Supplement manufacturers now create various stimulant-free (stim-free) products, which are formulated without caffeine and other common compounds used to raise your metabolism.
Instead, they contain a potent blend of active substances that promote vasodilation by producing more nitric oxide, including scientifically-researched and patented ingredients like GlycerSize™, and substances like citrulline malate (or L-citrulline), L-arginine and grape seed extract.
READ MORE | Prime Your Body For Performance With Pre-Workout Supplements
Boost blood flow
This effect helps to get more blood to working muscles, which increases muscle pumps and enhances endurance and power by delivering more performance-enhancing ingredients contained in pre-workouts, like glucose, creatine, N-acetyl-L-cysteine and Betaine Anhydrous.
Other common performance-enhancing ingredient include amino acids. For example, glycine helps to enhance peak power production and reduce lactate build-up during repeated, high-intensity exercise when taken up to 90 minutes before training, according to one study.
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Get a brain boost
And taurine, L-tyrosine and L-theanine help to produce neurotransmitters like dopamine, serotonin and GABA, which reduce stress and are linked with enhanced mood. These amino acids also improve energy production, along with B-vitamins.
And many stim-free products now contain powerful nootropics such as Alpha GPC and Huperzine A to enhance alertness, focus and concentration for that mental edge during workouts.
Without the impact on your nervous system, you can use stim-free pre-workout products in the late afternoon or early evening to maximise your workout intensity, without jeopardising your sleep quality or experiencing any jitters.
And stim-free products are the ideal option for those who use pre-workout regularly and want to cycle their use of stimulant-based products.
Author: Pedro van Gaalen
When he’s not writing about sport or health and fitness, Pedro is probably out training for his next marathon or ultra-marathon. He’s worked as a fitness professional and as a marketing and comms expert. He now combines his passions in his role as managing editor at Fitness magazine.
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