I've been training HARD for around 8 weeks- AM and PM, frequency and volume gradually increased Mainly Muay Thai, but also strongman stuff, complexes, and other forms resistance training 2+ hours a day, often 6-7 days a week. I actually still feel pretty good - Muay Thai going well, weights going up etc..
I'm 38 this month, work from 7.am until 4.pm (nanny has my little girl in the day) and am raising a 16 month old terror on my own (cancer took my daughter's mum recently) I've discovered that even at this age my body can tolerate more than I thought, I'm leaner, stronger and look bigger (in the shoulders and traps particularly, which with the leanness gives the illusion at least)
I planning a trip to the beach next week (I work and live in Thailand) and plan on taking my two 12kg, 20kg and 32kg kettle bells with me and doing 30 - 40 minutes swings, presses whatever on the beach in the morning after a couple of days rest. Added naps, plenty of massages, lots of quality food I'll be right as rain and ready to go. I may take 3-4 days complete rest after if I don't feel sufficiently rested.
Take home point (yes there is one) - Whether a 5-7 complete rest depends on various individual factors accumulating:
- Training history
- Volume, intensity and frequency (CNS intensive like Olympic or power lifting lifts, combat, aerobic, etc.
- Current environmental stress levels (for me my current situation and spurred me on and given me focus)
- Current condition and goals
- Current training program (maybe mixed if sports specific)
- Diet and sleep
- How you feel
- Individual physical and mental makeup
To many variables to give a cookie cutter answer. Push the envelope and see what happens, you may be able to tolerate more than you think.
Wise man once said 'the more you train and are able recover from, the more progress you'll make' - or something similar ;0)
Good luck my friend