Finding a true strength exercise for the core is more of a challenge than you might think. Put simply, to increase strength, resistance must high enough to complete a maximum of 5 repetitions only. Sit ups don’t cut it, they simply don’t offer enough resistance to develop strength —only muscular endurance.
One of my favourite core strength exercises is Candlesticks. Take a look at the following video to see how they’re done and how to progress the load. Perform between 3 to 5 sets of 1 to 5 reps in a session.
Add this exercise to your strength sessions and feel the difference in real core strength. Give them a try and let me know how you fared?