英語の過去形の練習のため、過去と現在において、空手とヨガの自己評価の変化を表現してみた

Practicing Karate was something that was good in the past but it isn't as great now due to physical limitations  that come with age.
On the other hand, doing  yoga wasn't something I was interesting in or found beneficial in the past, but now it has become a great activity  for me because  it suits my current needs and brings relaxation.