Blast, Blast, Blast,,,

Good idea, but if you try to start from scratch, you will most likely fail.

Try starting at 25 per day for a week or 2, then go to 50 for a couple of weeks, 75 for a couple of weeks, then go for the 100.

Building up keeps you from "biting off more than you can chew" at the beginning, plus helps you build the habit needed to carry on and incorporate such a habit into your everyday lifestyle.

I am NOT an exercise advocate because the idea has always met with interference, in my own personal (limited) experience.

Fact: you have to do something 2000 times before it becomes a reflex. I don't have a clue in regards to making a habit.

Take these thoughts for what it may (or may not) be worth!!!!
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QMC, USCG (Ret)
The best luck is what you make yourself!