Strong women are sexy women -- and "strong" doesn't just apply to our muscle tone and inner-fortitude. Nothing makes a woman look quite as radiant as strong, healthy skin.

However, last time we checked, there weren't barbells meant for our complexions. Instead, strong skin comes down to not just what you put on your face, but also how you treat your body. These six essential habits will help strengthen skin and boost its defenses all day long.

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That spin class, morning jog or yoga session isn't just your ticket to flat abs, it may give you stronger skin as well. Some research indicates that working out may boost circulation and your immune system, which could make you look younger. Even better, a 2014 study suggested that exercising may also reverse skin aging -- see, that gym membership will basically pay for itself.

There never feels like enough time in the day to get everything done, but setting aside a few minutes for meditation could give you a boost inside and out. Stress can aggravate skin issues, like acne, psoriasis and rosacea. Conversely reducing stress may help your skin look its best, so go ahead, roll out that yoga mat and embrace those Zen vibes.

Of course, while healthy habits will take you far, what you put on your face matters, too. Shiseido Ultimune Eye Power Infusing Eye Concentrate, $65, might just be your ticket to stronger skin. It features an immune system-boosting formula (which includes skin-enhancers, like Bulgarian rose water, yeast and gingko biloba leaf abstract), that makes the skin around your eyes look younger and healthier (think: firmer, smoother skin) in as little as four weeks. Simply apply it after cleansing in the morning and at night before applying your eye-care product. It's ophthalmologist-approved and works for all ages. Bonus: To give the rest of your face a boost, use it along with Shiseido's Ultimune Power Infusing Concentrate, $65.

The next time you have a choice between chicken and fish, consider opting for the latter. Healthy fats, like the omega-3 fatty acids found in fish, help lubricate the skin, keeping it elastic and supple over time. Not into seafood? Take a fish oil supplement instead.