When Shakespeare's melancholy Jaques declares that "all the world's a stage" and lays out the seven ages of a human life — the mewling infant, the whining schoolboy, the sighing lover, and on to second childishness at the end — he was not inventing the scheme. He was echoing a doctrine already more than a thousand years old, set down by the astronomer-astrologer Ptolemy: that a different planet governs each season of a life, handed off in turn from the soft lunar beginning to the slow Saturnine close. It is the body's whole arc, mapped onto the seven wandering lights.
We read it the way we read all of it — not as a verdict, but as a language for the body: a map of the season you are actually in.
Ptolemy's seven ages
The planets take the stage in order of their speed, fastest first, slowest last — which is also, beautifully, the order of a life:
- The Moon — infancy (roughly the first four years): pure growth, the soft and rapidly changing body.
- Mercury — childhood (to about fourteen): learning, restlessness, the quick darting mind.
- Venus — youth (to about twenty-two): love, desire, the body in full bloom.
- The Sun — the prime (to about forty-one): vitality, the established self at its height.
- Mars — middle age (to about fifty-six): ambition, struggle, the hard push of the years that build a life.
- Jupiter — elderhood (to about sixty-eight): wisdom, dignity, a mellowing expansiveness.
- Saturn — old age (beyond): slowing, limitation, gravity, the long quiet close.
Seven planets, seven seasons — the same arc Jaques speaks, drawn first in the sky.
The body across the ages
Read as a body, this is a map of how your physical needs change across an entire life. There is the lunar softness of infancy, the venusian bloom of youth, the solar fullness of the prime, the martial drive of the middle years, and the saturnine slowing of age. The body at twenty — under Venus and the Sun — simply does not want what the body at seventy, under Saturn, wants. And here lies the quiet error of most fitness culture: it pretends otherwise. It sells everyone, at every age, the body of the solar prime, and asks the seasons of Mars and Saturn to train as though they were still Venus. To honor the age you are actually in — to move with its planet rather than against it — is the real beginning of a practice that can last a whole life instead of a single decade.
Training with your age, not against it
Each age asks for a different emphasis, and none of them is lesser. Mars's middle years can still push hard, but they reward the longer warm-up the twenties never needed. Saturn's age trades raw output for patience, mobility, and the deep value of simply continuing to move. Jupiter's elderhood can be expansive and dignified rather than diminished. Every season has its own form of aliveness; the art is not to fight your age but to find the vitality that genuinely belongs to it. A body trained with its season ages far more gracefully than one at war with the calendar.
An old idea, made practical
Glyph Praxis is built to be a lifelong practice, not a young person's sprint you abandon when the body changes. It meets the body at whatever age it is in — honoring the planet of your present season — so that the practice can grow old alongside you instead of being outgrown. (It is a way of moving with the years, not medical advice for any of them.)
You can begin a practice that fits your season inside the app. Enter the practice — membership is $9.99/month, cancel anytime, and your first month is free.
✶ Continue the thread
The Seven Classical Planets
The seven rulers themselves — the planets that take the stage in turn.
Secondary Progressions
The inner seasons within the ages — the body becoming, year by year.
The Saturn Return
The thresholds between the ages — the great turnings of a life.