Three methods of isometric stretching recommended:
1. Stretch non-maximally with continual increases until you cannot, then apply short strong tensions to increase stretch, then hold last tension for up to 30s.
2. Stretch maximally, hold tensed until cannot, decrease stretch, then increase with tension, so on holding the last tension for minutes.
3. Recommended by author: Stretch nearly maximally, tense 3-5sec, relax and stretch again. Repeat until stretched maximally. Tense for up to 30sec, starting with less than this. Rest 1 minute, repeat, 3-5 total times.
