Fitbits are $30 off on Amazon today — and even celebrity trainers use them

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If you don’t have a Fitbit, now is the time to take the plunge. Fitbits are 30 percent off on Amazon today, knocking the gadgets down to less than $70. That’s a $30 savings on the fitness tracker trusted by celebrity trainers and their high-profile clients.

The Fitbit Inspire HR retails for $99.95, but is $69.95 for today only. The Fitbit tracks your heart rate 24/7, while also tracking your complete physical activity and sleep patterns. The tracker is compatible with iOS and Android, so it will definitely pair with your device. With a five-day battery life, the gadget can be worn all day long. And yes, it’s even waterproof.

The Fitbit Inspire HR comes in three different colors: black, white and lilac. Each hue is included in the sale.

Shop: Fitbit Inspire HR Tracker, $69.95 (Orig. $99.95)

Fitbits are tried-and-true products in the fitness space, trusted by celebrity trainers and notable celebs. Back in October, celebrity personal trainer Harley Pasternak — who has worked with Jessica Simpson, Kim Kardashian and Gwyneth Paltrow — told In The Know that a Fitbit is one of his personal favorite tools to track progress for his clients and himself.

"Sometimes I swim and it's waterproof,” Pasternak said. “I can also stream music through it. I can link mine to my clients so we have this friendly competition to see how many steps we've done to each other — so I can see how much or how little they've moved that week."

The device can hold you accountable to personal fitness goals, while also tracking your everyday habits to give a more comprehensive view of your health. After all, what you choose to do for exercise is only a portion what "health" is, and physical fitness is way more than a number on the scale or how much you can bench.

"When FitBit came along, it introduced this idea that I could give people credit for all the movement they did over the course of a day — not just on a machine in a gym,” Pasternak told In The Know earlier this month. “It revolutionized the experience, where all of a sudden a client would say, 'There’s a coffee shop that’s a mile from me. What if I walked to get my coffee every morning and walked back? Do I still have to do the cardio at the gym?'"

He added: “My clients now don’t even use the gym to do their cardio anymore, and it makes their lives more active overall."