I'd also wager that if I worked out like Roy Jones used to, I still wouldn't achieve physical ability similar or anywhere near his.
There are literally 100s of exercises harder than any variation of crunch that you can name that you could be doing which would be providing you with way better results than doing 1000, 2000 or 3000 crunches will.
The body responds to overload and if you can do that many reps, either at once or in a single workout than you're not going to achieve anything near the highest possible stimulus for notable adaptation in neurological or muscular strength or power.
What are the objectives of your core workout and how will doing such a high amount of reps achieve it?
You're already doing better exercises like hanging leg raises... which tells me that you're more than ready to ditch the high rep (i.e. 'long road to no where') crunches and start doing more intense movements... replace the bicycle crunches with Olympic bar corner rotations and the crunches with exercise like deep ab roll outs, weighted jack knives, ball plank tuck ins and gymnastic movements like skinning the cat.
I'll be honest, I've never really dedicated an entire session or even a sizable part of one to core training. The body works all or nothing and if you're doing heavier bodyweight moves (especially pull ups, but also dips and the more challenging types of push up) and heavy lifts... squats, deads, presses and cleans then core work should really just be done to supplement the already considerable amount of activation that you've already achieved.
There's a time and a place for isolation and endurance work, just as long as it's not the focus of your workout.
doing 1000s of crunches is going to leave you with tight hip flexors, a neglected posterior chain and a misaligned pelvis as a result. it'll catch up with you in later life and probably give you tonnes of lower back pain.
Bookmarks