I’m pretty susceptible to advertising. Like those fast food commercials, where the Coke is so fizzy and you can almost feel how cold it is? Ahhh. Or just about any Hallmark commercial will have me reaching for the tissue box before it’s over.

I also really have a thing for clever tag lines — especially ones that employ a play on words. For example: Kudos to whoever came up with the slogan for a mattress company: “Sleepy’s, for the rest of your life.”

Anyway … I’m sure you’re wondering, how does this relate to exercise and a healthy lifestyle?

I’m not a paid (or unpaid) spokesperson, nor do I have any special affinity for the company, but I think one of the most brilliant slogans ever is Nike’s “Just do it.”

Just do it.

Simple. Actionable. Inspiring. Even motivating. All in three words.

And right now, lately, I could use a lot of the latter. I feel a little embarrassed to say this as a fitness instructor, but I have been severely lacking in the motivation (and, for that matter, willpower) department. Summer is usually the time when I’m shot out of a cannon, getting in lots of long walks, working in my yard for half the weekend, doing lots of biking, eating piles of fresh fruit and vegetables.

But I’ve been in a slump the past month or two. I’ve had countless arguments with myself about getting out of bed and going to the gym, or resisting too many sweet treats. Bed and treats have been winning. It’s so easy to get into a vicious cycle. Not exercising leaves me more fatigued, which makes me not feel like getting out of bed in the morning, which makes me feel like a slug, which makes me want to wallow … repeat.

Enough is enough.

Alarm goes off for gym time? Just do it.

Be more active? Just do it.

Choose veggies and hummus instead of potato chips? Just do it.

Take a lap around my office instead of checking Facebook? Just do it.

Mind over matter … here I go.