A question from a reader: My girlfriend and I are having a little dilemma, we use both a condom and lubrication for her….she doesn’t NEED lubrication but it just makes everything smoother and feel better. Is the lubrication safe for the condom? Will is make it less effective or possible break it? [...]

A question from a reader: What are the General causes of friction?
What becomes of the energy used in overcoming friction?
How does lubrication reduce friction?

Product Description Discusses product basics, machine elements that require lubrication, methods of application, lubricant storage and handling, and lubricant conservation.
Lubrication Fundamentals, Second Edition

A question from a reader: What are the parts of the lubrication system of a car?

A question from a reader: I think I am pregnant but I haven’t found out for sure yet. But during intercourse I noticed that there is more vaginal lubrication than usual. Could that be a sign that I am pregnant?
I have had others signs as well. Missed periods, abdominal cramps, frequent urination etc. I [...]

A question from a reader: I masterbate but people have been saying to use lubrication
1.what type of lubrication can i get without my mom knowing what im using it for (dont want my mom to find out so if i get like ky jelly)
2.whats the difference between using lubriaction and not using it [...]