Stature in metres Weight in kgm. Span of % ratio arms, of stature Age Male Female % F/M Male Female % F/M male to span 0 0·500 0·494 98·8 3·2 2·9 90·7 0·496 100·8 1 0·698 0·690 98·8 9·4 8·8 93·6 0·695 100·4 2 0·791 0·781 98·7 11·3 10·7 94·7 0·789 100·3 3 0·864 0·854 98·8 12·4 11·8 95·2 0·863 100·1 4 0·927 0·915 98·7 14·2 13·0 91·5 0·927 100·0 5 0·987 0·974 98·7 15·8 14·4 91·1 0·988 99·9 6 1·046 1·031 98·5 17·2 16·0 93·0 1·048 99·8 7 1·104 1·087 98·4 19·1 17·5 91·6 1·107 99·7 8 1·162 1·142 98·2 20·8 19·1 91·8 1·166 99·6 9 1·218 1·196 98·2 22·6 21·4 94·7 1·224 99·5 10 1·273 1·249 98·1 24·5 23·5 95·9 1·281 99·4 11 1·325 1·301 98·2 27·1 25·6 94·5 1·335 99·2 12 1·375 1·352 98·3 29·8 29·8 100·0 1·388 99·1 13 1·423 1·400 98·4 34·4 32·9 95·6 1·438 98·9 14 1·469 1·446 98·4 38·8 36·7 94·6 1·489 98·7 15 1·513 1·488 98·3 43·6 40·4 92·7 1·538 99·4 16 1·554 1·521 97·8 49·7 43·6 87·7 1·584 98·1 17 1·594 1·546 97·0 52·8 47·3 89·6 1·630 97·9 18 1·630 1·563 95·9 57·8 49·0 84·8 1·670 97·6 19 1·655 1·570 94·9 58·0 51·6 89·0 1·705 97·1 20 1·669 1·574 94·3 60·1 52·3 87·0 1·728 96·6 25 1·682 1·578 93·8 62·9 53·3 84·7 1·731 97·2 30 1·686 1·580 93·7 63·7 54·3 85·3 1·766 95·5 40 1·686 1·580 93·7 63·7 55·2 86·7 1·766 95·5 50 1·686 1·580 93·7 63·5 56·2 88·4 — — 60 1·676 1·571 93·7 61·9 54·3 87·7 — — 70 1·660 1·556 93·7 59·5 51·5 86·5 — — 80 1·636 1·534 93·8 57·8 49·4 85·5 — — 90 1·610 1·510 93·8 57·8 49·3 85·3 — — curve; but the time comes when it accumulates no longer, and at last it is constrained to draw upon its dwindling store. But in part, the slow decline in stature is an expression of an unequal contest between our bodily powers and the unchanging force of gravity, {64} which draws us down when we would fain rise up[97]. For against gravity we fight all our days, in every movement of our limbs, in every beat of our hearts; it is the indomitable force that defeats us in the end, that lays us on our deathbed, that lowers us to the grave[98].