_Time_ is deuided into _accidentarie_ and _naturall_, and _naturall_ againe into _generall_ and _particular_. The _naturall time_ generally construed is ment by the spring, the summer, the haruest and the wynter: particularly by the howers of the day and night. The _accidentarie time_ chaungeth his name still, sometime faire, sometime foule, sometime hoat, sometime colde and so forth. Of this _accidentary time_ this rule is giuen, that in exercise we chuse, as neare as we can, faire weather, cleare and lightsome to confirme the spirites, which naturally reioice in light and are refreshed thereby: not cloudy, darke and thicke, wherein grosse humours make the bodie dull and heauie: againe when there is either no great, or no verie noysome winde to pearce the open pored body, nor to much forreine heat to enflame the naturall: nor to much cold to stiffen it to sore.
For the _naturall_ time generally taken, _Aristotle_[47] would haue the bodie most exercised in sommer, bycause the naturall heat being then least, and the bodie therefore most burdened with superfluities, then exercise most helpes: both to encrease the inward heat, and to send out those outward dettes. _Hippocrates_[48] againe giuing three principall rules to be kept in exercise, to auoide wearinesse, to walke in the morning, maketh this the third to vse both more and longer exercise in the winter and cold weather, and most of his fauourites hold that opinion. The reason is, bycause in sommer the heat of the time dryeth the bodie enough, so that it needeth no exercise to wither it to much, where the aire it selfe doth drie it enough. _Galene_[49] a man of great authoritie in his profession, pronounceth thus in generall, that as temperate bodies are to be exercised in a temperate season which he countes to be spring: so cold bodies are in hoat weather: hoat in cold, moyst in drie, drie in moyst: meaning thereby that whensoeuer the bodie seemeth to yeeld towardes any distemperature, then the contrarie both time and place must be fled to for succour. Of these opinions iudgement is to chuse, which it best liketh. Me thinke vpon diuers considerations, they maye all stand well without any repugnance, seing neither _Hippocrates_ nor _Galene_, deny exercise in sommer simply, and _Aristotle_ doth shew what it worketh in sommer.