When people are pushed for time they may feel like getting an effective workout is impossible. Research has shown many times that intense training for a shorter period of time is more beneficial than sweating for 60 minutes on a treadmill.
The abs are some of the hardest muscles to tone. The midsection is the first place most people, particularly women, store weight. It’s just the way the body works.
The perfect workout regimen varies with every individual. How people should rotate cardio and strength training depends on several factors, mostly goals.
Any CrossFitter will tell you it’s the intensity of the routine that separates him or her from the pack. But research shows that doing CrossFit too frequently without making some key adjustments can have undesired consequences.