Thanks for the reply! I have used the killer-core routine only during transition- and base-periods (2x/week), but if I understand correct I will get the full benefit if I include 2 core workouts/week throughout the year, also through the climbing-specific periods?
On the side, in my 35th year and 4th year of TFTNA-training plan I’m stronger than ever and hitting it harder then ever before in the mountains! Thanks for a great and inspiring book!
-K