Both. It starts with some cold sweats and then almost a tingling throughout about 30-45 after ingestion and then hits like a freight train. Can't sit still, increased heart rate, sweating, and over the top energy that requires something mindless and cardio based is engaged in. This lasts for 2-3 hours. Perfect for long bike rides, hiking, running, etc. Then it dissipates into a calmer, manageable energy with the moderate euphoria and mood boost for another couple hours. Start to finish about 6 hours.
Hands down the most intense OTC I've ever tried and I am a stim junkie. Any of my finils have nothing on this.