Although not prescribed this way, Cialis dose is related to body size. Over 200lbs may need 10mg to get the muscle oxygenation effect you're looking for.
It is safe (and FDA approved) to use up to 20mg once a day. Not as the "daily" treatment, but it's largely semantics, since 20mg a day "as needed" is acceptable, and you may "need" it every day, and 10mg is well within that limit.
The only risk is another round of short lived sides (shorter than the initial adjustment period), usually congestion again.
And on balance, Cialis provides a bunch of longevity enhancing benefits, from improved endothelium function to reduced systemic inflammation.