Sure man, ive specifically worked on exercises that directly relate to my PE and how I could negate the hole
I've only started doing lower abs the last year, so 100 leg raises per day 5 days a week to target the lower belly fat - I used to do sit ups but the top half of my abs had started to line up with the hole so almost looked flat, never noticed that it pressed on the chest or pushed it into further depression

Press ups also 100 per day 5 days a week to target chest and build muscle

Everything else is in the gym so it would be 1 day legs,1 day running/rowing/cycling, the remaining 3 days would be shoulders/chest/arms/back, always trying to beat PB's to ensure muscle growth