I went for years without heavy weight training but it's so important as we hit middle age to combat muscle loss and increase bone density. What I love about the kettlebell is it's like the Swiss army knife of fitness. You can pretty much target any muscle group with it. Just the simple swing alone is nearly a full body workout. My heart rate gets into the high 140's when I do that 15 minute workout video I posted. Please let me know how you like it if you try it.