TC Nutrition did things a little different with their Preworkout BATCH27. They sourced the most scientifically reserached ingredients and put them into their product. A good preworkout should give you:

• Extra energy
• Enhanced musle pumps
• Long lasting enduranvce
• Extra strenght output
• Laser sharp focus
• and most importantly, put you in an anabolic state, increasing muscle protein synthesis, allowing you to put on more muscle.

Which is exactly what they did with Batch 27.