And I'll second the caveat. I agree with this and the grandparent--if you are in reasonable shape, and want to maintain that, lifting low (< 5) reps and high w

And I'll second the caveat. I agree with this and the grandparent--if you are in reasonable shape, and want to maintain that, lifting low (< 5) reps and high weight is a great thing. If you do other activities, you could probably lift 30 minutes, two to three days a week, and see health improvements. But, yeah, think hard about form, and start lifting too light. What does bad form look like? Start with this video: https://www.youtube.com/watch?v=J9TVFxPUZ6E https://www.youtube.com/watch?v=J9TVFxPUZ6E