Unexpected Static Shocks Every Time I Touch My Metal Desk—What’s Causing This?

I recently set up a home office with a sleek metal desk, but I keep getting zapped with static electricity whenever I touch it, especially after walking across my carpeted room. It’s not just a minor shock; it’s surprisingly painful and happens multiple times a day. I tried increasing the humidity using a small humidifier, but it hasn’t helped much. The desk is grounded only through the legs resting on a rug, no special grounding wires or mats. Has anyone dealt with persistent static shocks from metal furniture? Would grounding the desk properly solve this, and if so, what’s the safest and easiest way to do that at home without rewiring? Also, are there any quick fixes or products that can reduce static buildup without major changes?