Just as Mussorgsky wrote his "Pictures from an Exhibition" suite after attending an art exhibition, I've created a more prosaic piece of content below which are examples of the questions I experienced from my final examination for a Professional Diploma in Sports and Exercise Nutrition. You'll see from the questions how this knowledge fits into my ambition to help people lower their body age and live longer actively and independently.
For those who are curious, the correct selections are: 1 - (a), 2 - 91.6-160.4g / day, 3 - (c), 4 - 2079kcal / day, 5 - False, 6 - True, 7 - False, 8 - (a), 9 - Energy availability, Menstrual function, Bone strength, 10 - (b), 11 - Soy, 12 - All factors, 13 - All factors, 14 - False, 15 (d).
From what I see around me, it seems that the older we get the more we become afraid of strength training - older people start to believe that it will do them more harm than good.
That's not the case, and you can do a lot with just bodyweight exercises to get started. Although you cannot reach the ultimate strength outcomes without heavy weights e.g. deadlifts and cleans - you can still achieve enormous benefits by just doing bodyweight exercises. And of course you can do those yourself at home.
Still, access to good equipment at a gym and a trainer, at least initially, is an advantage. Some basic knowledge also helps, and my four principles below will give you a great head start.
Since I was diagnosed at 50 with Type 2 diabetes I've been learning how to do bone-building body-shaping training for people our age. You can too. It's your choice. Walter