Cristina Mackey is showing Rick Ross what he is missing! In a new social media post the rapper's former flame flaunts her insanely fit figure – including her impressive six-pack, while promoting her fitness brand. "Welcome to MackeyBody World," she captioned the Instagram post, eliciting a major response from her followers. "The baddest, always have been, and always will be," one commented. "Natural & she body goals," added another. How does the personal trainer approach health and fitness? Here is everything you need to know about her routine. 

Cristina spends a lot of time at the gym. Her main fitness form is weight and strength training. She even has her own exercise bands. According to the Mayo Clinic, strength and weight training help reduce body fat, preserve and increase lean muscle mass, and burn calories more efficiently. Strength training may also help you:

• Develop strong bones
• Manage your weight
• Enhance your quality of life
• Manage chronic conditions
• Sharpen your thinking skills

Cristina also boxes.  Harvard Health maintains that boxing is a great way to build strength, improve balance, posture, hand-eye coordination, boost mood and endurance, and helps increase alertness. 

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Cristina claims that her "Mackey Body Board" helps "break down fat so that you can build up muscle and then emphasize that muscle when it does come in." She adds that it "helps contour, it helps create shape."  

Because she works out so much, Cristina replenishes her body by hydrating. According to the U.S. National Academies of Sciences, Engineering, and Medicine men should drink about 15.5 cups (3.7 liters) of fluids a day and women about 11.5 cups (2.7 liters) of fluids. The Mayo Clinic explains that hydration is important for a variety of reasons. Water helps get rid of waste through urination, perspiration, and bowel movements, keeps your temperature normal, lubricates and cushions joints, and helps protect sensitive tissues.

Cristina makes sure to stretch, especially post-workout. "Did you stretch today?" she asks in one of her videos. "Stretching keeps the muscles flexible, strong, and healthy, and we need that flexibility to maintain a range of motion in the joints," says Harvard Health. "Without it, the muscles shorten and become tight. Then, when you call on the muscles for activity, they are weak and unable to extend all the way. That puts you at risk for joint pain, strains, and muscle damage."