Energy comes on fast and feels very intense, more like urgency than a good mood or uplift. Focus is strong and narrow, but it feels aggressive and can be uncomfortable if your tolerance is low or you have anxiety. Pumps are average since the stimulants tighten blood flow, but output and training volume stay high.
Bottom line: Best for high-tolerance users who want aggressive, fast-paced training sessions, not for relaxed or feel-good workouts.