Merino wool yes!
I have base layers which are made from 100% Merino wool. The base layers from Merino wool get consistently ranked very well for active sports. Usually in cold or freezing conditions. They are most expensive (the least inexpensive ones start at $50). I have seen multiday hikers, skiiers, mountaineers, backpackers and bikers write glowing reviews about Merino wool base layers. The high performing ones if I recall correctly have some synthethic material woven in the Merino wool fibers/threads when used for base layers.
I wear 100% Merino wool long sleeve T-shirts. The material is lot thinner than traditional sweaters. They quickly build up the heat and cause sweating during any physical activity. I almost never wear the Merino wool t-shirts for salsa dancing. They don't wick. The base layers do but not the t-shirts I have. They act more like thin sweaters than athletic wear.