STIM-FREE

What is Stim-Free Pre-Workout Used For?

Is a Stim-Free Pre-Workout Better than a Stim-Based Pre-Workout?

Choosing between stim-free and stim-based pre-workout depends on your personal needs and tolerance for stimulants, notably caffeine. Many people admittedly love the jolt of wakefulness and increased vigilance that caffeine provides, and are more likely to perform well in the gym because of that.
 

Obviously, the psychotropic rush you feel after taking a stim-based pre-workout will not be as apparent when taking a non-stim pre-workout. But if you work out later in the day, a stimulant-free pre-workout may be the better option so it doesn't interfere with your sleep.

Will Stim-Free Pre-Workout Keep Me Up at Night?

Can You Take Stim-Free Pre-Workout Every Day?

How Does Non-Stim Pre-Workout Feel?

Does Non-Stim Pre-Workout Help Build Muscle?

What is the Difference Between Transparent Labs Bulk, Lean, and Stim-Free Pre-Workouts?

I Don't Live in the United States, Can I Still Buy Transparent Labs Stim Free Pre Workout?

Does this Product Contain Nuts?

L-Citrulline Malate (2:1) |8,000 mg

L-citrulline is an amino acid naturally found in watermelon that plays an important role in kidney function. It's become a popular ingredient in pre-workout supplements due to its ability to boost nitric oxide levels [1]. When nitric oxide production increases, blood flow improves, allowing nutrients and oxygen to replenish muscle tissue more efficiently. Ultimately, this translates to greater muscle pumps and heightened energy levels.
 

Numerous studies have demonstrated the ergogenic effects of L-citrulline malate, the citrulline salt of malic acid, such as:

• Improving strength, aerobic performance, and muscle endurance [2, 3]
• Elevating nitric oxide levels even more than equivalent doses of L-arginine [4]
• Enhancing muscle anabolism and reducing muscle catabolism [5]

Beta-Alanine | 4,000 mg

Beta-alanine is a beta-amino acid that combines with L-histidine to form a dipeptide known as carnosine. Supplementing with beta-alanine has been shown to increase muscle carnosine levels, which are quickly depleted during intense exercise [6].
 

Carnosine is an endogenous dipeptide that functions as a buffer in muscle cells, thereby attenuating the accumulation of acidic byproducts of muscular exertion (e.g. lactate and hydrogen ions) [7]. Hence, bolstering muscle carnosine levels—via beta-alanine—allows you to push yourself longer and harder in the gym.
 

Pre-workout supplements almost always contain beta-alanine but in inefficacious doses. We made sure to include an evidence-based dose of beta-alanine (2,000 mg) in every scoop of LEAN Pre-Workout. Relevant evidence-based benefits of beta-alanine include:

• Delaying the onset of neuromuscular fatigue during intense exercise [8]
• Increasing overall muscle strength [9] 
• Improving muscle endurance and total work capacity [10]
• Reducing and combatting the formation of dysfunctional proteins and promoting the formation of healthy proteins [11]
• Significantly increasing lean muscle mass as part of a diligent resistance-training program [12]
   

*Note that beta-alanine causes a benign tingling sensation known as paresthesia while the body acclimates to higher carnosine levels. This effect is harmless and gradually lessens with consistent use.

BetaPure™ Betaine Anhydrous | 2,500 mg

Taurine | 1,300 mg

L-taurine is a non-proteinogenic amino acid often considered essential to pre-workout supplementation due to its diverse benefits for athletes and gym-goers. For one, taurine is a potent nootropic that promotes focus and attenuates brain cell inflammation and oxidative stress [17, 18].
 

Taurine can also enhance physical performance via increased blood flow to skeletal muscle tissue [19, 20]. Greater blood flow to muscle tissue encourages a favorable milieu for muscle function and recovery during training.

Additionally, taurine supplementation has been shown to improve performance in endurance athletes [21].

L-Tyrosine | 1,000 mg

Senactiv® 50mg

elevATP® Ancient Peat and Apple Fruit Extract | 150 mg

ElevATP® is a clinically researched combination of  “ancient peat” (fossilized plants) and apple skin extracts. Using innovative biotechnology, elevATP® stimulates your body’s endogenous production of adenosine triphosphate (ATP), the veritable energetic currency of cells.
 

By boosting ATP production, ElevATP® can help promote athletic performance (e.g. max strength) and improve body composition [28, 29]. ElevATP® is also a fast-acting ATP booster that starts working from the very first dose [30].

BioPerine® | 5 mg

BioPerine® is a patented black pepper (Piper nigrum) fruit extract standardized for its piperine content. Piperine is a natural alkaloid known for its “bioenhancer” properties, improving the bioavailability of molecules that are typically poorly absorbed or extensively metabolized in the liver [31, 32]. 

Hence, BioPerine® helps your body better absorb and utilize the other active ingredients in Bulk Black Pre-Workout.

Huperzine A | 100 mcg

Huperzine A is a naturally occurring alkaloid found in the Chinese club moss Huperzia serrata. It has gained prominence in the world of cognitive enhancement for its ability to inhibit acetylcholinesterase, an enzyme that breaks down acetylcholine in the brain. Acetylcholine is a key neurotransmitter involved in muscle contraction, arousal, sleep, and cognition.
 

By inhibiting its breakdown, huperzine A helps to maintain higher levels of cholinergic transmission, leading to improved mental focus, increased alertness, and better memory retention [33]. These effects make it a valuable addition to non-stim pre-workouts.