[rtkwe]

Not generally, remember Ohm's Law I = V/R. Internally the body has a resistance of ~300 Ohms as a rough rule while our skin is 1000-10000 depending on the condition and contact area involved.

So 3V isn't going to pose any real risk unless it's applied internally and right across a critical nerve leading to your heart or a muscle directly on the heart. For reference pacemakers are generally set to 2-3 volts. Applied externally up to ~12V is generally considered low enough voltage there's a low risk of truly adverse effects.

[hobs]

As shown in StyroPyro's video of him laying across dozens of car batteries (and then shorting them through various things) https://www.youtube.com/watch?v=ywaTX-nLm6Y

His entire rig at one point delivered >80k amps, but he's fine.

[capitainenemo]

Speaking of, he also had this great video on lethality of electricity.

https://www.youtube.com/watch?v=BGD-oSwJv3E