: Exhale on the "effort" phase (the crunch or the lift) to deepen the abdominal engagement.
If you are looking for a high-quality "post" or routine to get started with that theme, here is a foundational designed for efficiency: The "Female Fitness" Core Circuit : Exhale on the "effort" phase (the crunch
Perform each move for 45 seconds, with 15 seconds of rest in between. : Exhale on the "effort" phase (the crunch
: It is better to do 5 slow, perfect reps than 20 fast ones with poor form. : Exhale on the "effort" phase (the crunch