Yes. If you are doing exercise with the potential to build muscle, such as weightlifting using over 50% of your maximal capability, it is helpful to eat 30-50 grams of sugar (preferably just glucose or maltodextrin) just before or during the workout to raise insulin levels and build more muscle. I try to save my sugar cravings for these times. Standard Gatorade bottles contains 35 grams.or so, but there are tastier things.
It should be noted being big in itself and very high levels of strength training are not correlated with longevity.
Since metformin is usually taken twice daily, if taking a small dose for potential anti-aging benefit one might want to take it well before exercising or on days off. However, this is not an approved use and cannot be recommended at this time without more research. And not everyone should be taking metformin, which requires healthy fairly kidneys and testing to confirm this…