Yup! I meditate each day, 20 minutes, to help me get back into the present moment that LSD opened up for me. Honestly, for me, 20 minutes is where my mind and breath starts to slow down, and other than a calming effect, it's not very noticeable. I only do 20 minutes most of the time because of time restraints.
If I continue, I start seeing colors swirl around the 30min mark, reminding myself not to get attached to it. After 40 min, the cognitive changes are VERY noticeable when I stop. Food tastes great, colors are vivid, and I can even feel the individual water drops in the shower.. I liken it to cannabis effects without the racing thoughts.