Pre-workout bundles pair two or three training powders, usually a caffeinated stimulant formula with a pump formula, so you can stack them or use them apart. Stacks come from 10X Athletic, LEVRONE, Fitness Authority and Trec Nutrition, with a flavour choice for most tubs and free shakers in several.
Stimulant tubs can contain a lot of caffeine, so check the label and start with a smaller serving if you are new to them. Single tubs are in Pre-Workout and Pump & Nitric Oxide.
A stim pre-workout contains caffeine and other stimulants, while a pump formula is usually stimulant-free and built around ingredients such as citrulline. Pairing them lets you use the pump tub alone for late sessions.
Yes, on most stacks. The 10X Athletic PUMP + STIM stack, for example, has a separate flavour menu for each tub, giving 56 combinations.
High-caffeine products are not recommended for children or for pregnant or breastfeeding women. Check the caffeine content and warnings on each label, and avoid other caffeine sources on the same day.
Most stacks are priced around 10% below buying the tubs separately, and the 10X Athletic and Trec Boogieman stacks add a free shaker.
