Do not wear for long period of time to avoid discomfort. Do not wear outside as the Faux Piercing may not hold during repetitive movements like walking, dancing, jumping, swimming, etc. Do not wear while exercising, bathing, sleeping, etc. Do not use it if you have a nickel allergy. Keep away from children, this is not a toy. Use it only for its intended purpose. Some people tolerate Magnetic Body Jewelry better than others. There are several factors that come into play when wearing this type of piercing, including the shape/size of the belly button and the thickness of the skin, which will impact the strength of the magnet. It might strong enough for some people but might be too weak for others. It might take some trial and error to find the best placing at first. Each experience is unique. The best way to find out is to try it on. You benefit from Amazon's return policy.