Will Shatner was 90 when he was on a suborbital launch with Blue Origin. Given his wealth and access to quality healthcare etc. he was probably a decent amount

Will Shatner was 90 when he was on a suborbital launch with Blue Origin. Given his wealth and access to quality healthcare etc. he was probably a decent amount healthier than the median 90 year old, but given that he was able to do it without issue I imagine the vast majority of humans under the age of ~60 or so can definitely manage.