Are there any good exercises to do with free weights for your core?
There are plenty of core workouts that can be done without any weight except for your body's weight.
one of them is plank. It is important and excellent exercise to do which will help you strengthen your whole core, but you have to do it in the proper way to get more benefits from it.
Mountain climbers is also one of the hard workouts for your core that will make you stronger.
Squats is very popular also and widely used as a leg workout, but it also works on your core.
To learn more about top 10 best abs workout you read this article