Beginning in your 30s and 40s you can lose up to 1-2% of muscle mass each year, if you don’t strength train.
There are SO SO SO SO SO many advantages to strength training; faster metabolism, increased lean muscle mass, strength, increase in bone density, injury prevention, improved balance, decreased risk of coronary disease, not to mention feeling and looking better. If I had to recommend weight training or cardio because of time sake…I would choose weight training. It scares me that women are intimidated by weights, fight your fears and insecurities and try incorporating weights into your daily regimen. Do it, make a commitment today to give weight training try.