Among the popular workouts, Pilates is the choice of most female celebrities.
Pilates gained worldwide popularity in the mid-2000s, although it has been around since the 1920s.
According to PilatesCentral.co.uk, it was invented by Joseph Pilates, a German who wanted to find a new exercise method to strengthen the body.
It was believed that he was one of the first to "combine Western and Eastern ideas about health and physical fitness… [practicing] every kind of exercise he could."
Joseph took elements from “classical Roman and Greek exercise regimes to body-building and gymnastics” as well as “the Eastern disciplines of yoga, tai chi, martial arts, and Zen meditation” to form the foundation of the Pilates we know of today.
In essence, Pilates is a body-conditioning exercise that promises to result in “a leaner, suppler, more toned body and a calmer, more relaxed mind.”
It is a much less aggressive form of exercise than most popular aerobic workouts, which put Pilates in the same fitness category as yoga.
But Pilates involves much more complicated and dynamic poses than yoga, which suit celebrities like Jennylyn Mercado who has converted a section of her home into a Pilates studio.
Bea Alonzo, on the other hand, is a recent convert and has enrolled in a class.
The actress has done Day 5 of her class, determined to work on her flexibility and posture.
As part of her "Balik Alindog Program," Bea wanted to become more fit with the help of Pilates.
Lovi Poe and Janine Gutierrez both consider Pilates as their favorite workout.
Every day, Lovi spends at least 30 minutes of Pilates exercise to keep her body fit.
For Janine, Pilates is her "go-to for a quick fix" whenever she needs a self-confidence booster.
And in case you didn't know, Pilates is also a good workout for preggy mamas.
Take a leaf from Bianca Gonzalez-Intal, who is expecting her second child.
Though admitting that "the struggle to keep fit during pregnancy is real," Bianca is again doing the prenatal Pilates regime.
According to an article by Shape.com, certified Pilates instructor Andrea Speir said that prenatal Pilates "will help mamas feel great throughout pregnancy, push during labor, and bounce back post-baby."
It can also help you deal easier with back pains and sleep troubles.
But as Bianca pointed out in her Instagram post: "Of course, every pregnancy is different.
"Ask you doctor [first] before starting any exercise."