Checked your cortisol levels lately? On Saturday, May 11, all Sam’s Club stores with pharmacies will offer several basic medical screenings for free, including one for the “stress hormone,” to get a reading on how well your adrenal or pituitary glands are working.

(This Mayo Clinic page explains what can happen if your cortisol goes haywire.)

You don’t have to be a member to take advantage of these screenings, so stop in.

And the gift cards?I’ll get to them in a minute. Don’t stress out.

Late yesterday afternoon the UPS left leaving an envelope whose contents — “Superman: Last Son of Krypton” and “Beware the Batman” — sent me rocketing back to my childhood.

They’re two of the books to be given away tomorrow for Free Comic Book Day 2013. Every first Saturday in May the comics industry gives away millions of titles for free at comic shops across the country.

Some 4.6 million comics will be handed across counters this year, which is a 30% increase over 2012.

Comics have moved beyond the POW! ZAP! these days. SpongeBob Squarepants has his own comic series. So does “Sesame Street.” The wildly popular series “The Walking Dead” began as a comic book, although purists would probably call it a graphic novel.

The free-comic lineup is quite the mixed bag: books based on the usual superheroes like Superman, Batman and The Hulk, plus titles whose heroes range from Judge Dredd to MegaMan to the children’s book character Pippi Longstocking. (Go here for a full list of offerings.)

Got health insurance? If not, you can get some free testing this Saturday at any Sam’s Club location that has a pharmacy.

From 11 a.m. to 3 p.m., both members and non-members can take advantage of:

• Total cholesterol test
• Blood pressure reading
• Vision screening
• Glucose test
• Body mass index screening
• Oral health questionnaire
• “Dental tablets,” which show up any spots you’re missing when you brush

Oral health issues may indicate other health conditions. People with serious gum disease are 40 percent more likely to have another chronic condition. Dental health professionals will be on hand to offer tips about proper care for teeth and gums.

Should it turn out that you need glasses, see this article on Frugal Nation for info on getting your specs for less (as in, $7 or less). For tips on saving money on all sorts of medical treatment – or not having to pay at all — see “Surprising ways to save money on health care.”

If you don’t have insurance, by all means take advantage of the free screenings. Knowledge is power, especially when it comes to your health.

Want to change careers but fear you’ve already invested “too many” years in your current one to give up?

Or needing to focus on what’s happening right now while still hoping for change?

Maybe you’re trying to follow a dream but beset by setbacks and naysayers. Or you’re either on top of the world or at the depths of despair.

If any (or all!) of this is true, you might want this week’s giveaway.