High - intensity training produces positive results (without a sharp downward turn in health or fitness in the near future) in the presence of an aerobic base that is capable of absorbing the stresses and metabolic by - products of that high - intensity activ
High -
intensity training produces positive results (without a sharp downward turn
in health or fitness
in the near future)
in the
presence of an aerobic base that is capable of absorbing the stresses and metabolic by - products of that
high - intensity activ
high -
intensity activity.