Stimulated pre-workouts vs Non-stimulated pre-workouts: Which is best for you and what are the benefits of each?

by Josh Davis
Stimulated pre-workouts will have varying doses of stimulants such as caffeine, di-caffeine malate, yohimbine, theobromine, theacrine/teacrine, etc... to increase energy levels, alertness, cognitive abilities, exercise performance, and stamina. On top of these ingredients, most stimulated pre-workouts will also contain ingredients such as beta-alanine for muscular endurance and delaying the onset of lactic acid so you can push longer and harder, creatine for cell volumization, increasing ATP (the source of energy used to power the movement of contraction in working muscles), increase overall workload capabilities, and enhance recovery, and vasodilators such as L-Arginine, L-Citrulline, Nitrosigine, etc.. to increase oxygen and blooflow to the muscles delivering more endurance, strength, oxygen utilization, and better nutrient delivery for more natural energy.
If you love the surge of energy, the feeling of being super amped for a big lift or hard workout, or struggle with fatigue, low energy levels, or focus, these pre-workouts will be perfect for you. 
Non-stimulated pre-workouts are exactly as they sound... a pre-workout that delivers heightened endurance, blood flow, oxygen utilization, energy, and focus without the use of stimulants, So, how is this achieved? Well, non-stimulant pre-workouts (just like stimulated pre-workouts) vary with ingredients and have different attributes depending on the formula.
The first thing all non-stimulant pre-workouts will contain is vasodilators to increase blood flow, delivering more blood, oxygen, and nutrients to the muscles which will increase endurance, stamina, oxygen utilization, muscular recovery, nutrient absorption for increased natural energy levels, and power. Other ingredients you may find in non-stimulant pre-workouts are beta-alainine for enhanced muscular endurance and delaying the onset of lactic acid so you can push longer and harder - creatine for cell volumization, increasing ATP (the source of energy used to power the movement of contraction in working muscles), increase overall workload capabilities - nootropics for enhanced cognitive abilities such as concentration, focus, memory, and alertness - betaine anhydrous for increased power and strength, speeds up muscle growth, and delays muscle fatigue.
Non-stimulant pre-workouts are an excellent choice if you're a bodybuilder who loves a tremendous muscle pump and the feeling of blood engorging your muscles, if you are sensitive to stimulants but still want an energy boost for the gym, if you workout late at night and don't want to be kept awake by stimulants, or if you want to increase athletic performance but want to avoid stimulants that can drastically increase heart rate.
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