Definitely not a beginner pre- workout. The beads in this mixture definitely work and they gave me energy for long periods of time. 2.5-3 hours no problem with only one scoop. This product is designed to give you equal amounts of energy throughout your entire workout so if you only workout an hour at a time, be prepared for jitters and rushes after your workout because its still gonna be releasing energy. This product has an absolutely fantastic flavor and a great pump. I live about 15 minutes away from my local gym, so I would take it before I left and by the time I walked in the door I was beyond ready to start lifting. So if you want something for long and strenuous amounts of energy this is by far in the top 3 if those are your requirements.