As a teen, Mary Jelkovsky was obsessed with having “thigh gap”—upper thighs so thin, they didn't touch and instead had space between them.

These days, the 20-year-old wellness influencer knows that thigh gap is unrealistic. But after she recently saw a thigh gap workout on social media, she was so outraged, she came up with her own cheeky way of showing others that having thigh gap is unhealthy, and prizing it promotes unrealistic body standards.

On Tuesday, she posted what she called her "two-step method" to getting thigh gap. Posing in a white tee and underwear, she wrote: “1. Separate thighs” and “2. Screw it. Love yoself.” She provided more context in the caption.

When she was a personal trainer, “women from all walks of life would constantly use phrases like ‘problem area’ and ‘my biggest insecurity’ to describe their legs or midsection (or both),” she wrote. “It was very sad to hear that a mother of 4 was too ashamed of her body to have sex with her husband or that a college girl didn’t want to go to a pool party until she lost 10 pounds.”

RELATED: If Thigh Gap and Hip Dip Weren't Enough, Now Women Are Supposed to Worry About Having 'Armpit Vaginas'

Jelkovsky tells Health she was motivated to share message of self-acceptance because she's frustrated that so many women still try to achieve thigh gap. This “problem area” continues to cause problems for women today.

“I remembered being in high school when the thigh gap trend was very alive and I spent hours on the internet looking at how to do it,” she says. “The other day I was on Pinterest and I saw an ‘inner thigh workout for a thigh gap’ and I was so shocked that this was still a thing! I don’t want my little sister to grow up in a world where air between your legs has any significance.”

Less than a quarter of Americans are meeting all national physical activity guidelines, according to a new report from the Centers for Disease Control and Prevention’s National Center for Health Statistics (NCHS).

Federal physical activity guidelines recommend that adults get at least 150 minutes of moderate or 75 minutes of vigorous exercise each week, in addition to muscle-strengthening activities at least twice a week. But according to the new NCHS report, which drew on five years of data from the National Health Interview Survey, only about 23% of adults ages 18 to 64 are hitting both of those marks. Another 32% met one but not both, and almost 45% did not hit either benchmark.

Those numbers fluctuated somewhat depending on gender, occupation and home state. More men (roughly 27%) than women (almost 19%) met both guidelines, and both genders saw slightly higher percentages among working adults (almost 29% and 21%, respectively).

The authors also added that people working in managerial or “professional” positions were more likely than individuals in production roles, such as assembly and manufacturing, to meet the standards. However, the report looked only at leisure-time physical activity, so adults who log exercise through active jobs or commutes were not included in the findings.

Some states saw adherence rates well above the national average, while others were well below. Colorado led the pack, with 32.5% of adults meeting both federal exercise guidelines. In Mississippi, just 13.5% of adults reported meeting both exercise guidelines.

With some exceptions, states on the West Coast and in the Northeast tended to have higher percentages of residents meeting the guidelines than states in the South. Residents of states in the Southeast had particularly low rates. High levels of unemployment and disability or poor health in a state were correlated with lower rates of meeting exercise guidelines, the researchers found.

In all, the results suggest that most Americans should try to squeeze more exercise into their time off, given its well-established connections to everything from chronic disease prevention to mental and cognitive health benefits.

What is Amazon Prime Day?

First launched back in 2015, Prime Day has become one of the biggest sales of the year, with major markdowns on everything from electronics to fitness gear to smart home gadgets (last year, the Echo was one of the most popular items sold).

The exact details of Prime Day change from year to year, but the sale typically launches sometime in mid July and lasts for about 24-30 hours. Although we don't know the exact date yet, it was July 15 in 2015, July 12 in 2016, and July 10 in 2017—so we're guessing this year's Prime Day will occur sometime around those days. Also cool: There are usually pre-sales announced a few days before the actual event.

What should I know about Amazon Prime Day?

If you spot a great deal, you should definitely click "Add to cart" ASAP. Many Prime Day sales have a short time limit, and others, called "lightening deals," end when the item is out of stock. Some sales are also announced throughout the day, so keep checking back to make sure you don't miss anything.

Last year, we saw some great savings on workout and sporting gear (including must-have brands like Reebok, Adidas, and Fitbit), home and electronics (tons of Amazon devices were marked down), kitchen essentials from brands like Keurig and Calphalon, and even some rare luxury beauty discounts.

How can I find the best Amazon Prime Day deals?

The first thing you need to do is make sure you're an Amazon Prime member; all Prime Day sales are exclusive to members. You can sign up for a 30-day free trial during your first month of Prime, and it's then $119 a year. If you're not already a member, trust us, it's worth every penny: you get access to tons of freebies (music, videos, e-books, and audio streaming services), as well as free 2-day shipping on qualifying items.

Keep an eye on this page, and we'll continue to update it as new deals come in.