Performing planks is one of the simpler, more effective methods of increasing core strength. If you are bored of the same old, you can make it slightly more challenging by incorporating the time tested Tabata Method, which follows a 20 seconds on, 10 seconds off scheme.
However, instead of resting at the 10 second interval, you will perform the following:
20 seconds to one side (left or right)
10 seconds to the front
20 seconds to the other side
Repeat until time is up
Of course, the prerequisite would be being able to hold a plank in each direction for 30 seconds to a minute nonstop. Add this to your repertoire, and you'll definitely notice an increase in core strength!
