I don’t usually ease into things and just start with a regular dose but I followed the instructions this time and feel that was a very good decision. My first dose was 2 capsules, 35 minutes before my workout with16 ounces of water, and on an empty stomach. I never felt jittery and my stomach felt fine as I worked out and post workout. During my workout, I felt normal as with any workout. After my workout and cooldown, I normally sit in an area that has good airflow to help my body cool down as I tend to sweat a lot. Of course, I had read about the thermogenic effects of Unlock capsules beyond fat burner, and knew I would sweat much longer than normal however, I noticed my arms were getting cold. About an hour after my workout I continued to feel colder, which spread to my legs, and the sweat was just rolling down my face. I continues to drink water because of the sweating. I noticed my veins in my arms and legs looked “small” and as I rubbed my arms to warm them, there was a tingling sensation. I decided to sit outside in the Florida sun to try and warm up. I continued to monitor my constricted blood vessels and thought, if my blood vessels are constricted then my blood pressure will be high. I don’t have a heart condition nor blood pressure issues but wondered how I would have been effected if I did. I took a shower to help myself warm up, which was 3 hours after I took the capsules and my arms felt cold for another hour after that. I would not recommend this product and feel if I had high blood pressure or any health issues, this could have been really bad for me.