Categories Articles If you can climb 4 flights of stairs in 90 seconds, your heart is in good health, study says Post author By crystalg Post date December 11, 2020 Study Finds Tags climb, flights, Good, Health, heart, Says, seconds, Stairs, Study ← The 9 best ‘Shark Tank’ products that didn’t land deals but are still doing incredibly well → 57 New Shows and Movies That May Help Disney Overtake Netflix in the Streaming Wars