Core work -- Don't do crunches. Do deadlifts, hanging leg raises, power wheel work, back extensions.
SDK -- I take rapid fire ones in a 50, slightly less rapid in a 100. I never take big undulating SDKs. But this might vary some by size; I'm short.
Monofin -- Better for core work and dolphin kick than regular fins. But if you have stiff long blade fins (not the silly floaty kind), then you will get great core and leg strengthening by using them. Kick fast with fins, although I work on DPK with fins too.
Core work -- Don't do crunches. Do deadlifts, hanging leg raises, power wheel work, back extensions.
SDK -- I take rapid fire ones in a 50, slightly less rapid in a 100. I never take big undulating SDKs. But this might vary some by size; I'm short.
Monofin -- Better for core work and dolphin kick than regular fins. But if you have stiff long blade fins (not the silly floaty kind), then you will get great core and leg strengthening by using them. Kick fast with fins, although I work on DPK with fins too.
