Hi Hilda,
Congratulations on starting an exercise program! It really is vital to good
health and well-being. In answer to your question: Exercise twice a week is
not enough! You will spend two hours working hard, and seeing little benefit!
Better to exercise 1/2 hour 4x. As you are new to exercise, 1/2 hour is
sensible, so you don’t overdo it. You need to start carefully, not to hurt
yourself. You can get quite a lot of benefit from your short sessions. When I
started ER about 3 years ago, I hadn’t exercised in several years. I started
with 3-5 walks per week, each walk about 1/2 hour. The results came very
quickly, as far as muscle tone, energy, ability to walk faster and faster. Now
I go out 5-6 times per week for 1-2 hours, longer on the weekend, and walk, run,
hike, rollerblade, bike, kayak, etc. It is really amazing how quickly your
short sessions can benefit you, and how much fun you can have doing this, once
you feel strong and capable. What exercise are you doing? How are you getting
started?