It’s really cold where I live right now, and sometimes I don’t want to go to the gym. So instead I use two different kettlebells that I bought several years ago. The kettlebell exercise is the most convenient because you can do cardio and strength training exercise at the same time. A kettlebell would be most beneficial in my opinion for the people that have a busy schedule. You can find many kettlebell routines on YouTube that you can follow along. Some women might be afraid of heavy weights because they think it will bulk them up, but I have done a large amount of strength training and exercise in the past and never had this problem. When using kettlebells it is better to start off with a lower weight, then go to a higher one as you progress to prevent harming your muscles.