Why One Day Is Not the Problem
After a single hard session, most people restore fluid balance over the following day without thinking about it, through normal meals and drinking. The system has plenty of slack when there is a full day and a night to use it.
Where Blocks Differ
Stack sessions on consecutive days and the recovery window shrinks. A modest deficit left at the end of each day carries into the next, and each session starts a little further behind than the last. Nothing dramatic happens on any given day, which is exactly why it goes unnoticed.
The Window Between Sessions
On a stacked block, what happens between sessions matters more than what happens during them. That means drinking with meals rather than only around training, and paying some attention to sodium if sessions are long or hot, since plain water alone in large volumes is less effective at restoring balance.
A Simple Way To Track It
Weighing yourself first thing each morning, under the same conditions, gives a trend. Day-to-day fluctuation is normal and not worth reacting to. A steady downward drift across a block is the signal worth acting on, and it is one that how you feel will often miss.
Frequently Asked
How do I know if I am behind across a block?
Morning body weight under consistent conditions is the practical marker. A steady drift down across several days is more informative than any single reading.
Is water enough between sessions?
For short or mild sessions, usually. Where sessions are long or hot and losses are larger, sodium alongside fluid helps the body hold on to what you drink.
Should I drink to a schedule on training blocks?
A rough plan helps, because thirst lags behind losses. It does not need to be rigid.
