“Muscle memory is also why physiologists recommend filling your muscles with as many nuclei as you can while you’re young. “You’re still able to run a marathon, just not as quick. You’re still able to lift weights, just not the heavy ones,” says Callaghan. “The type 1 fibres dominate when you get older, and the type 2 fibres – the fast-twitch fibres – tend to ease off, but they’re still there.” Building muscle gets harder as you age, whereas maintenance is easy. Worried about forking out for a gym membership? Commit to it today and you can consider it a life long investment.”
It all comes down to what your natural testosterone levels should be, recommended averages differ all over the world ie avg test in Canada is much much higher than the UK where its harder to get lean meat and game meat. So “juicing” to bring your test levels back to their normal levels when you said in your 20’s or so is fairly common for older men and decently safe when under medical supervision. This lady probably had a myriad of health issues prior to her training and is likely much better off now. They don’t cause miracles as people said above you still have to put in the work to grow the muscle but yes you can train harder, longer and recover faster – so that is why it is considered cheating in sports as a steroid user can outperform a Natty any day of the week but in the regular world – who gives a shit she looks much better, looks happier and healthier.