Brooke Burke, 50, shows off her abs in a bra and undies’

Brooke Burke showed off her incredibly fit figure on Instagram on Tuesday.

The 50-year-old cover girl – who is a mother to four kids – was seen working out while in a gray bra and undies set. ‘Pick your program! We have a full carousel of Beach BURNs. Lets take it outside this week,’ she said as she plugged her app Brooke Burke Body which can be found on the Apple App Store. 

Burke has been known for staying in great shape all year round no matter what. ‘I am a year round wellness person,’ the star told DailyMail.com earlier this year. ‘People want to ramp up their workouts for summer so they can look good in a bikini but I create a lifestyle for all year round.’

She added that she works out constantly not just to look good, but also to feel good.

‘It’s about how you feel, it’s about body confidence, and not so much about how you look in a swimsuit. When you look better outside, you feel better inside,’ the star told DailyMail.com exclusively.

‘What’s scary is the other side of not working out,’ added the former Playboy cover girl. 

She also has been taking Tru Niagen for the past five years. It increases cellular metabolism.

‘There is so much in one capsule,’ said Brooke. ‘It’s the one supplement I never skip because it makes me feel good, and it supports my journey with healthy aging.’

Tru Niagen increases levels of NAD+, which is critical to generating energy within the trillions of cells throughout your body, according to the website.

She doesn’t take the winter off: Burke has been known for staying in great shape all year round no matter what. ‘I am a year round wellness person,’ the star told DailyMail.com earlier this year. ‘People want to ramp up their workouts for summer so they can look good in a bikini but I create a lifestyle for all year round’

Feel good: She added that she works out constantly not just to look good, but also to feel good. ‘It’s about how you feel, it’s about body confidence, and not so much about how you look in a swimsuit. When you look better outside, you feel better inside,’ the star told DailyMail.com exclusively

‘These levels decline not only with age but also with physiological stress on your body. Without NAD+, your cells can’t function properly, and neither can you,’ it was added.

And there is also Tru Niagen Immune which has immune-boosting ingredients such as vitamin D, C, and zinc and NAD+ support for the optimal maintenance and function of aging cells. NAD+ is nicotinamide adenine dinucleotide, a coenzyme central to cellular metabolism.  

Brooke is engaged to businessman Scott Rigsby and they are planning a 2023 wedding.   

The Wild On! host has four kids: Neriah, 22, and Sierra, 20, with ex-husband Garth Fisher, a plastic surgeon, and Heaven, 15, Shaya, 14, with ex-husband Dave Charvet of Baywatch fame. 

She also told DailyMail.com her five minute workouts that have helped her stay toned.

The Dancing With The Stars winner explained that if one does five minutes workouts six times a day, that is a 30 minute workout per day which certainly is better than nothing.

‘It sounds like a joke but time is our biggest demon,’ shared the mother of four. 

Chipping away at her curves: ‘It sounds like a joke but time is our biggest demon,’ she shared. ‘If you do a five minute workout six times a day, you have a 30 minute workout under your belt which does make a difference’

Red hot workout: ‘One of the first things you can do is stretch in bed after you wake up,’ offered the Malibu resident. ‘Once you open your eyes just stretch your arms and legs out. Then turn your legs from side to side. After five minutes of this your are getting the blood flowing and have more mobility.’

‘If you do a five minute workout six times a day, you have a 30 minute workout under your belt which does make a difference.’ 

The brunette bombshell – who is the spokesperson for Tru Niagen which increases NAD+, a coenzyme central to cellular metabolism – also shared how a five minute workout looks and when to squeeze one in.

‘One of the first things you can do is stretch in bed after you wake up,’ offered the Malibu resident.

‘Once you open your eyes just stretch your arms and legs out. Then turn your legs from side to side. After five minutes of this your are getting the blood flowing and have more mobility.’

Another five minute workout can be done at a desk.

‘So many people work at desks for 10 hours a day, and it can make your stiff,’ Burke began.

‘It’s good to get up from your chair and just do a few lunges, reach up above your head, do a squat. After five minutes of that your mood will improve.’

And another tip is to get off that sofa when watching TV at home.

‘It’s so easy to get up and do a few stretches when you are taking in your favorite show. Just move around, stretch your arms out, do a lunge, it will wake you up a bit.

‘Even just walking in place while lifting light dumbbells is energizing.’ 

Other places to do those quick five minute stretches is when in line at the grocery store, when  waiting for the microwave to do its job, and also when talking to a friend on the phone.

From then to wow: On the left the model was seen in 2001 at an FHM event in Los Angeles; on the right the star is posing for a selfie at home in TomboyX underwear, adding she did not use any filters