My first puff of Critical Jack left me with my eyebrows raised questioningly. I wondered if I'd actually taken in any smoke until I exhaled and a saw a ton of smoke. I tasted absolutely nothing. A couple more puffs with the same result; intriguing. I didn't feel any immediate effect. Which is unusual for me. About ten minutes later I started feeling something, I just wasn't sure what. Slowly but surely my energy level began to raise and my Fibro fog began to clear. I was mellow and enjoyed sitting around relaxed and deep in thought. It eased my pain, and relieved finger stiffness. Though it did irritate my sinuses slightly. I wouldn't pay a premium for this strain but I would buy it on sale again for sure. I really enjoyed how long the effects lasted. This is a good late afternoon early evening strain for me.